2021 B Battelier, J Bergé, A Bertoldi, L Blanchet, K Bongs, P Bouyer, C Braxmaier, D Calonico, P Fayet, N Gaaloul, C Guerlin, A Hees, P Jetzer, C Laemmerzahl, S Lecomte, C Le Poncin-Lafitte, S Loriani, G Metris, M Nofrarias, E Rasel, S Reynaud, M Rodrigues, M Rothacher, A Roura, C Salomon, S Schiller, WP Schleich, C Schubert, CF Sopuerta, F Sorrentino, TJ Sumner, GM Tino, P Tuckey, W von Klitzing, L Woerner, P Wolf and M Zelan "Exploring the foundations of the physical universe with space tests of the equivalence principle" , Exp. Astronomy 51 1695-1736. |
Abstract: We present the scientific motivation for future space tests of the equivalence principle, and in particular the universality of free fall, at the 10(- 17) level or better. Two possible mission scenarios, one based on quantum technologies, the other on electrostatic accelerometers, that could reach that goal are briefly discussed. This publication is a White Paper written in the context of the Voyage 2050 ESA Call for White Papers. |
BibTeX:
@article{Battelier2021, author = {Battelier, Baptiste and Bergé, Joel and Bertoldi, Andrea and Blanchet, Luc and Bongs, Kai and Bouyer, Philippe and Braxmaier, Claus and Calonico, Davide and Fayet, Pierre and Gaaloul, Naceur and Guerlin, Christine and Hees, Aurelien and Jetzer, Philippe and Laemmerzahl, Claus and Lecomte, Steve and Le Poncin-Lafitte, Christophe and Loriani, Sina and Metris, Gilles and Nofrarias, Miquel and Rasel, Ernst and Reynaud, Serge and Rodrigues, Manuel and Rothacher, Markus and Roura, Albert and Salomon, Christophe and Schiller, Stephan and Schleich, Wolfgang P. and Schubert, Christian and Sopuerta, Carlos F. and Sorrentino, Fiodor and Sumner, Timothy J. and Tino, Guglielmo M. and Tuckey, Philip and von Klitzing, Wolf and Woerner, Lisa and Wolf, Peter and Zelan, Martin}, title = {Exploring the foundations of the physical universe with space tests of the equivalence principle}, journal = {Experimental Astronomy}, journal = {Exp. Astronomy}, year = {2021}, volume = {51}, pages = {1695-1736}, doi = {10.1007/s10686-021-09718-8} } |
2021 J Bergé, L Baudis, P Brax, S-W Chiow, B Christophe, O Doré, P Fayet, A Hees, P Jetzer, C Lä¤mmerzahl, M List, G Métris, M Pernot-Borras, J Read, S Reynaud, J Rhodes, B Rievers, M Rodrigues, T Sumner, J-P Uzan and N Yu "The local dark sector" , Exp. Astronomy 51 1737-1766. |
Abstract: We speculate on the development and availability of new innovative propulsion techniques in the 2040s, that will allow us to fly a spacecraft outside the Solar System (at 150 AU and more) in a reasonable amount of time, in order to directly probe our (gravitational) Solar System neighborhood and answer pressing questions regarding the dark sector (dark energy and dark matter). We identify two closely related main science goals, as well as secondary objectives that could be fulfilled by a mission dedicated to probing the local dark sector: (i) begin the exploration of gravitation's low-acceleration regime with a spacecraft and (ii) improve our knowledge of the local dark matter and baryon densities. Those questions can be answered by directly measuring the gravitational potential with an atomic clock on-board a spacecraft on an outbound Solar System orbit, and by comparing the spacecraft's trajectory with that predicted by General Relativity through the combination of ranging data and the in-situ measurement (and correction) of non-gravitational accelerations with an on-board accelerometer. Despite a wealth of new experiments getting online in the near future, that will bring new knowledge about the dark sector, it is very unlikely that those science questions will be closed in the next two decades. More importantly, it is likely that it will be even more urgent than currently to answer them. Tracking a spacecraft carrying a clock and an accelerometer as it leaves the Solar System may well be the easiest and fastest way to directly probe our dark environment. |
BibTeX:
@article{Berge2021, author = {Bergé, Joel and Baudis, Laura and Brax, Philippe and Chiow, Sheng-Wey and Christophe, Bruno and Doré, Olivier and Fayet, Pierre and Hees, Aurélien and Jetzer, Philippe and Lä¤mmerzahl, Claus and List, Meike and Métris, Gilles and Pernot-Borras, Martin and Read, Justin and Reynaud, Serge and Rhodes, Jason and Rievers, Benny and Rodrigues, Manuel and Sumner, Timothy and Uzan, Jean-Philippe and Yu, Nan}, title = {The local dark sector}, journal = {Experimental Astronomy}, journal = {Exp. Astronomy}, year = {2021}, volume = {51}, pages = {1737-1766}, doi = {10.1007/s10686-021-09734-8} } |
2021 M Charlton, JJ Choi, M Chung, P Cladé, P Comini, P-P Crépin, P Crivelli, O Dalkarov, P Debu, L Dodd, A Douillet, S Guellati-Khelifa, P-A Hervieux, L Hilico, A Husson, P Indelicato, G Janka, S Jonsell, J-P Karr, BH Kim, E-S Kim, SK Kim, Y Ko, T Kosinski, N Kuroda, B Latacz, H Lee, J Lee, AMM Leite, K Leveque, E Lim, L Liszkay, P Lotrus, T Louvradoux, D Lunney, G Manfredi, B Mansoulié, M Matusiak, G Mornacchi, VV Nesvizhevsky, F Nez, S Niang, R Nishi, S Nourbaksh, KH Park, N Paul, P Perez, S Procureur, B Radics, C Regenfus, J-M Rey, J-M Reymond, S Reynaud, J-Y Rousse, O Rousselle, A Rubbia, J Rzadkiewicz, Y Sacquin, F Schmidt-Kaler, M Staszczak, B Tuchming, B Vallage, A Voronin, A Welker, DP van der Werf, S Wolf, D Won, S Wronka, Y Yamazaki and K-H Yoo "Positron production using a 9 MeV electron Linac for the GBAR experiment" , Nucl. Instrum. Methods A 985 {164657} 164657. |
Abstract: For the GBAR (Gravitational Behaviour of Antihydrogen at Rest) experiment at CERN's Antiproton Decelerator (AD) facility we have constructed a source of slow positrons, which uses a low-energy electron linear accelerator (linac). The driver linac produces electrons of 9 MeV kinetic energy that create positrons from bremsstrahlung-induced pair production. Staying below 10 MeV ensures no persistent radioactive activation in the target zone and that the radiation level outside the biological shield is safe for public access. An annealed tungsten-mesh assembly placed directly behind the target acts as a positron moderator. The system produces 5 x 10(7) slow positrons per second, a performance demonstrating that a low-energy electron linac is a superior choice over positron-emitting radioactive sources for high positron flux. |
BibTeX:
@article{Charlton2021, author = {Charlton, M. and Choi, J. J. and Chung, M. and Cladé, P. and Comini, P. and Crépin, P-P and Crivelli, P. and Dalkarov, O. and Debu, P. and Dodd, |
2021 A Husson, B Kim, A Welker, M Charlton, J Choi, M Chung, P Cladé, P Comini, P-P Crépin, P Crivelli, O Dalkarov, P Debu, L Dodd, A Douillet, S Guellati-Khélifa, N Garroum, P-A Hervieux, L Hilico, P Indelicato, G Janka, S Jonsell, J-P Karr, E-S Kim, S Kim, Y Ko, T Kosinski, N Kuroda, B Latacz, H Lee, J Lee, A Leite, K Lévèque, E Lim, L Liszkay, P Lotrus, D Lunney, G Manfredi, B Mansoulié, M Matusiak, G Mornacchi, V Nesvizhevsky, F Nez, S Niang, R Nishi, S Nourbaksh, K Park, N Paul, P Pérez, S Procureur, B Radics, C Regenfus, J-M Reymond, S Reynaud, J-Y Roussé, O Rousselle, A Rubbia, J Rzadkiewicz, Y Sacquin, F Schmidt-Kaler, M Staszczak, B Tuchming, B Vallage, A Voronin, D van der Werf, S Wolf, D Won, S Wronka, Y Yamazaki and K-H Yoo "A pulsed high-voltage decelerator system to deliver low-energy antiprotons" , Nucl. Instrum. Methods A 1002 165245. |
Abstract: The GBAR (Gravitational Behavior of Antihydrogen at Rest) experiment at CERN requires efficient deceleration of 100 keV antiprotons provided by the new ELENA synchrotron ring to synthesize antihydrogen. This is accomplished using electrostatic deceleration optics and a drift tube that is designed to switch from -99 kV to ground when the antiproton bunch is inside - essentially a charged particle elevator - producing a 1 keV pulse. We describe the simulation, design, construction and successful testing of the decelerator device at -92 kV on-line with antiprotons from ELENA. |
BibTeX:
@article{Husson2021, author = {A. Husson and B.H. Kim and A. Welker and M. Charlton and J.J. Choi and M. Chung and P. Cladé and P. Comini and P.-P. Crépin and P. Crivelli and O. Dalkarov and P. Debu and L. Dodd and A. Douillet and S. Guellati-Khélifa and N. Garroum and P.-A. Hervieux and L. Hilico and P. Indelicato and G. Janka and S. Jonsell and J.-P. Karr and E.-S. Kim and S.K. Kim and Y. Ko and T. Kosinski and N. Kuroda and B. Latacz and H. Lee and J. Lee and A.M.M. Leite and K. Lévèque and E. Lim and L. Liszkay and P. Lotrus and D. Lunney and G. Manfredi and B. Mansoulié and M. Matusiak and G. Mornacchi and V.V. Nesvizhevsky and F. Nez and S. Niang and R. Nishi and S. Nourbaksh and K.H. Park and N. Paul and P. Pérez and S. Procureur and B. Radics and C. Regenfus and J.-M. Reymond and S. Reynaud and J.-Y. Roussé and O. Rousselle and A. Rubbia and J. Rzadkiewicz and Y. Sacquin and F. Schmidt-Kaler and M. Staszczak and B. Tuchming and B. Vallage and A. Voronin and D.P. van der Werf and S. Wolf and D. Won and S. Wronka and Y. Yamazaki and K.-H. Yoo}, title = {A pulsed high-voltage decelerator system to deliver low-energy antiprotons}, journal = {Nuclear Instruments and Methods in Physics Research Section A}, journal = {Nucl. Instrum. Methods A}, year = {2021}, volume = {1002}, pages = {165245}, doi = {10.1016/j.nima.2021.165245} } |
2021 LB Pires, DS Ether, B Spreng, GRS Araujo, RS Decca, RS Dutra, M Borges, FSS Rosa, GL Ingold, MJB Moura, S Frases, B Pontes, HM Nussenzveig, S Reynaud, NB Viana and PA Maia Neto "Probing the screening of the Casimir interaction with optical tweezers" , Phys. Rev. Res. 3 033037 |
Abstract: We measure the colloidal interaction between two silica microspheres in an aqueous solution in the distance range from 0.2 to 0.5 mu m with the help of optical tweezers. When employing a sample with a low salt concentration, the resulting interaction is dominated by the repulsive double-layer interaction which is fully characterized. The double-layer interaction is suppressed when adding 0.22M of salt to our sample, thus leading to a purely attractive Casimir signal. When analyzing the experimental data for the potential energy and force, we find good agreement with theoretical results based on the scattering approach. At the distance range probed experimentally, the interaction arises mainly from the unscreened transverse magnetic contribution in the zero-frequency limit, with nonzero Matsubara frequencies providing a negligible contribution. In contrast, such unscreened contribution is not included by the standard theoretical model of the Casimir interaction in electrolyte solutions, in which the zero-frequency term is treated separately as an electrostatic fluctuational effect. As a consequence, the resulting attraction is too weak in this standard model, by approximately one order of magnitude, to explain the experimental data. Overall, our experimental results shed light on the nature of the thermal zero-frequency contribution and indicate that the Casimir attraction across polar liquids has a longer range than previously predicted. |
BibTeX:
@article{Pires2021, author = {Pires, L. B. and Ether, D. S. and Spreng, B. and Araujo, G. R. S. and Decca, R. S. and Dutra, R. S. and Borges, M. and Rosa, F. S. S. and Ingold, G. L. and Moura, M. J. B. and Frases, S. and Pontes, B. and Nussenzveig, H. M. and Reynaud, S. and Viana, N. B. and Maia Neto, P. A.}, title = {Probing the screening of the Casimir interaction with optical tweezers}, journal = {Physical Review Research}, journal = {Phys. Rev. Res.}, year = {2021}, volume = {3}, article-number = {033037}, doi = {10.1103/PhysRevResearch.3.033037}, language = {English}, unique-id = {WOS:000671591900005} } |
2020 A Canaguier-Durand, A Lambrecht and S Reynaud "Scattering properties of collective dipolar systems" , Eur. Phys. J. D 74 77. |
Abstract: We present a theoretical treatment of light scattering by an ensemble of N dipoles, taking into account recurrent multiple scattering. We study the intrinsic optical properties of collective dipolar systems without specifying a particular illumination condition. We apply this formalism to study the collective absorption modes for an ensemble of small nanoparticles and then to derive collective radiative corrections due to mutual interactions in dipolar ensembles, a topic of major importance in the development of collective nanophotonic systems or atomic networks used as optical clocks. |
BibTeX:
@article{Canaguier-Durand2020, author = {Canaguier-Durand, Antoine and Lambrecht, Astrid and Reynaud, Serge}, title = {Scattering properties of collective dipolar systems}, journal = {European Physical Journal D}, journal = {Eur. Phys. J. D}, year = {2020}, volume = {74}, pages = {77}, doi = {10.1140/epjd/e2020-100530-y} } |
2020 B Kim, J Choi, M Chung, P Cladé, P Comini, P Crivelli, P-P Crépin, O Dalkarov, P Debu, L Dodd, A Douillet, P Froehlich, S Guellati, J Heinrich, P Hervieux, L Hilico, A Husson, P Indelicato, G Janka, S Jonsell, JP Karr, ES Kim, S Kim, Y Kom, T Kosinski, N Kuroda, B Latacz, H Lee, J Lee, A Leite, E Lim, L Liszkay, T Louvradoux, D Lunney, K Lévéque, G Manfredi, B Mansoulié, M Matusiak, G Mornacchi, V Nesvizhevsky, F Nez, S Niang, R Nishi, S Nourbaksh, P Lotrus, K Park, N Paul, P Pérez, B Radics, C Regenfus, S Reynaud, JY Roussé, A Rubbia, J Rzadkiewicz, Y Sacquin, F Schmidt-Kaler, M Staszczak, B Tuchming, B Vallage, D van der Werf, A Voronin, A Welker, S Wolf, D Won, S Wronka, Y Yamazaki and KH Yoo "Development of a PbWO4 Detector for Single-Shot Positron Annihilation Lifetime Spectroscopy at the GBAR Experiment" , Acta Physica Polonica A 137 122. |
Abstract: We have developed a PbWO4 (PWO) detector with a large dynamic range to measure the intensity of a positron beam and the absolute density of the ortho-positronium (o-Ps) cloud it creates. A simulation study shows that a setup based on such detectors may be used to determine the angular distribution of the emission and reflection of o-Ps to reduce part of the uncertainties of the measurement. These will allow to improve the precision in the measurement of the cross-section for the (anti)hydrogen formation by (anti)proton-positronium charge exchange and to optimize the yield of antihydrogen ion which is an essential parameter in the GBAR experiment. |
BibTeX:
@article{Kim2020, author = {B.H. Kim and J.J. Choi and M. Chung and P. Cladé and P. Comini and P. Crivelli and P.-P. Crépin and O. Dalkarov and P. Debu and L. Dodd and A. Douillet and P. Froehlich and S. Guellati and J. Heinrich and P.A. Hervieux and L. Hilico and A. Husson and P. Indelicato and G. Janka and S. Jonsell and J. P. Karr and E. S. Kim and S.K. Kim and Y. Kom and T. Kosinski and N. Kuroda and B. Latacz and H. Lee and J. Lee and A.M.M. Leite and E. Lim and L. Liszkay and T. Louvradoux and D. Lunney and K. Lévéque and G. Manfredi and B. Mansoulié and M. Matusiak and G. Mornacchi and V.V. Nesvizhevsky and F. Nez and S. Niang and R. Nishi and S. Nourbaksh and P. Lotrus and K.H. Park and N. Paul and P. Pérez and B. Radics and C. Regenfus and S. Reynaud and J. Y. Roussé and A. Rubbia and J. Rzadkiewicz and Y. Sacquin and F. Schmidt-Kaler and M. Staszczak and B. Tuchming and B. Vallage and D.P. van der Werf and A. Voronin and A. Welker and S. Wolf and D. Won and S. Wronka and Y. Yamazaki and K. H. Yoo}, title = {Development of a PbWO4 Detector for Single-Shot Positron Annihilation Lifetime Spectroscopy at the GBAR Experiment}, journal = {Acta Physica Polonica A}, journal = {Acta Physica Polonica A}, year = {2020}, volume = {137}, pages = {122}, doi = {10.12693/APhysPolA.137.122} } |
2020 Nesvizhevsky, V. V., Nez, F., Vasiliev, S. A., Widmann, E., Crivelli, P., Reynaud, S. and Voronin, A. Yu. "A magneto-gravitational trap for studies of gravitational quantum states" , Eur. Phys. J. C 80 520. |
Abstract: Observation time is the key parameter for improving the precision of measurements of gravitational quantum states of particles levitating above a reflecting surface. We propose a new method of long confinement in such states of atoms, anti-atoms, neutrons and other particles possessing a magnetic moment. The earth gravitational field and a reflecting mirror confine particles in the vertical direction. The magnetic field originating from electric current passing through a vertical wire confines particles in the radial direction. Under appropriate conditions, motions along these two directions are decoupled to a high degree. We estimate characteristic parameters of the problem, and list possible systematic effects that limit storage times due to the coupling of the two motions. |
BibTeX:
@article{Nesvizhevsky2020, author = {Nesvizhevsky, V. V. and Nez, F. and Vasiliev, S. A. and Widmann, E. and Crivelli, P. and Reynaud, S. and Voronin, A. Yu.}, title = {A magneto-gravitational trap for studies of gravitational quantum states}, journal = {Eur. Phys. J. C}, journal = {Eur. Phys. J. C}, year = {2020}, volume = {80}, pages = {520}, doi = {10.1140/epjc/s10052-020-8088-2} } |
2020 S Niang, M Charlton, J Choi, M Chung, P Cladé, P Comini, P Crivelli, PP Crépin, O Dalkarov, P Debu, L Dodd, A Douillet, P Froehlich, J Gafriller, S Guellati, J Heinrich, P Hervieux, L Hilico, A Husson, P Indelicato, G Janka, S Jonsell, JP Karr, B Kim, E-S Kim, S Kim, A Kleyheeg, Y Ko, T Kosinski, N Kuroda, B Latacz, H Lee, J Lee, A Leite, E Lim, L Liszkay, T Louvradoux, D Lunney, K Lévéque, G Manfredi, B Mansoulié, M Matusiak, G Mornacchi, V Nesvizhevsky, F Nez, R Nishi, S Nourbaksh, K Park, N Paul, P Pérez, B Radics, C Regenfus, S Reynaud, JY Roussé, A Rubbia, J Rzadkiewicz, Y Sacquin, F Schmidt-Kaler, M Staszczak, B Tuchming, B Vallage, D van der Werf, A Voronin, A Welker, S Wolf, D Won, S Wronka, Y Yamazaki, KH Yoo and CJ Baker "Accumulation of Positrons from a LINAC Based Source" , Acta Physica Polonica A 137 164. |
Abstract: The GBAR experiment aims to measure the gravitational acceleration of antihydrogen H. It will use H+ ions formed by the interaction of antiprotons with a dense positronium cloud, which will require about 1010 positrons to produce one H+. We present the first results on the positron accumulation, reaching 3.8±0.4×108 e+ collected in 560 s. |
BibTeX:
@article{Niang2020, author = {S. Niang and M. Charlton and J.J. Choi and M. Chung and P. Cladé and P. Comini and P. Crivelli and P. P. Crépin and O. Dalkarov and P. Debu and L. Dodd and A. Douillet and P. Froehlich and J. Gafriller and S. Guellati and J. Heinrich and P.A. Hervieux and L. Hilico and A. Husson and P. Indelicato and G. Janka and S. Jonsell and J. P. Karr and B.H. Kim and E.-S. Kim and S.K. Kim and A. Kleyheeg and Y. Ko and T. Kosinski and N. Kuroda and B. Latacz and H. Lee and J. Lee and A.M.M. Leite and E. Lim and L. Liszkay and T. Louvradoux and D. Lunney and K. Lévéque and G. Manfredi and B. Mansoulié and M. Matusiak and G. Mornacchi and V.V. Nesvizhevsky and F. Nez and R. Nishi and S. Nourbaksh and K.H. Park and N. Paul and P. Pérez and B. Radics and C. Regenfus and S. Reynaud and J. Y. Roussé and A. Rubbia and J. Rzadkiewicz and Y. Sacquin and F. Schmidt-Kaler and M. Staszczak and B. Tuchming and B. Vallage and D.P. van der Werf and A. Voronin and A. Welker and S. Wolf and D. Won and S. Wronka and Y. Yamazaki and K. H. Yoo and C. J. Baker}, title = {Accumulation of Positrons from a LINAC Based Source}, journal = {Acta Physica Polonica A}, journal = {Acta Physica Polonica A}, year = {2020}, volume = {137}, pages = {164}, doi = {10.12693/APhysPolA.137.164} } |
2019 A Canaguier-Durand, R Pierrat and R Carminati "Cross density of states and mode connectivity: Probing wave localization in complex media" , Phys. Rev. A 99 013835. |
Abstract: We introduce the mode connectivity as a measure of the number of eigenmodes of a wave equation connecting two points at a given frequency. Based on numerical simulations of scattering of electromagnetic waves in disordered media, we show that the connectivity discriminates between the diffusive and the Anderson localized regimes. For practical measurements, the connectivity is encoded in the second-order coherence function characterizing the intensity emitted by two incoherent classical or quantum dipole sources. The analysis applies to all processes in which spatially localized modes build up, and to all kinds of waves. |
BibTeX:
@article{Canaguier-Durand2019, author = {Canaguier-Durand, Antoine and Pierrat, Romain and Carminati, Rémi}, title = {Cross density of states and mode connectivity: Probing wave localization in complex media}, journal = {Phys. Rev. A}, journal = {Phys. Rev. A}, year = {2019}, volume = {99}, pages = {013835}, doi = {10.1103/PhysRevA.99.013835} } |
2019 SM Cherniavsky, E Lychagin V, AY Muzychka, G Nekhaev V, VV Nesvizhevsky, S Reynaud, A Strelkov V and K Turlybekuly "Temperature dependence of the probability of ``small heating'' and total losses of UCNs on the surface of Fomblin oils of different molecular mass" , Eur. Phys. J. C 79 329. |
Abstract: We measured the temperature dependence of the probability of small heating and total losses of UCNs on the PFPE Fomblin Y surface with various molecular mass M-(W) over bar (2800, 3300, 6500 amu) in the temperature range of 100-300 K. The probability of small heating sharply decreases with increasing M-(W) over bar and decreasing temperature. The probability of total loss weakly decreases with decreasing temperature and takes the minimum value at M-(W) over bar = 3300 amu. As this oil provides a homogeneous surface with minimal probabilities of small heating and total losses of UCNs, it is the preferred candidate for experiments on measuring the neutron lifetime. |
BibTeX:
@article{Cherniavsky2019, author = {Cherniavsky, S. M. and Lychagin, V, E. and Muzychka, A. Yu and Nekhaev, V, G. and Nesvizhevsky, V. V. and Reynaud, S. and Strelkov, V, A. and |
2019 P-P Crépin, C Christen, R Guérout, VV Nesvizhevsky, A Voronin and S Reynaud "Quantum interference test of the equivalence principle on antihydrogen" , Phys. Rev. A 99 042119. |
Abstract: We propose to use quantum interferences to improve the accuracy of the measurement of the free-fall acceleration g of antihydrogen in the gravitational behavior of antihydrogen at rest (GBAR) experiment. This method uses most antiatoms prepared in the experiment and it is simple in its principle, as interferences between gravitational quantum states are read out without transitions between them. We use a maximum likelihood method for estimating the value of g and assess the accuracy of this estimation by a Monte Carlo simulation. We find that the accuracy is improved by approximately three orders of magnitude with respect to the classical timing technique planned for the current design of the experiment. |
BibTeX:
@article{Crepin2019, author = {Crépin, P.-P. and Christen, C. and Guérout, R. and Nesvizhevsky, V. V. and Voronin, A.Yu. and Reynaud, S.}, title = {Quantum interference test of the equivalence principle on antihydrogen}, journal = {Phys. Rev. A}, journal = {Phys. Rev. A}, year = {2019}, volume = {99}, pages = {042119}, doi = {10.1103/PhysRevA.99.042119} } |
2019 P-P Crépin, EA Kupriyanova, R Guérout, A Lambrecht, VV Nesvizhevsky, S Reynaud, S Vasiliev and AY Voronin "Quantum reflection of antihydrogen from a liquid helium bulk" , Hyperfine Interactions 240 58. |
Abstract: We study the quantum reflection of ultracold antihydrogen atoms bouncing on the surface of a liquid helium bulk. The Casimir-Polder potential and quantum reflection are calculated and compared to the same quantities for other bulks. Antihydrogen can be protected from annihilation for as long as 1.3 s on a bulk of liquid He-4, and 1.7 s for liquid He-3. These large lifetimes open interesting perspectives for spectroscopic measurements of the free fall acceleration of antihydrogen. |
BibTeX:
@article{Crepin2019a, author = {Crépin, P.-P. and Kupriyanova, E. A. and Guérout, R. and Lambrecht, A. and Nesvizhevsky, V. V. and Reynaud, S. and Vasiliev, S. and Voronin, A. Yu.}, title = {Quantum reflection of antihydrogen from a liquid helium bulk}, journal = {Hyperfine Interactions}, journal = {Hyperfine Interactions}, year = {2019}, volume = {240}, pages = {58}, doi = {10.1007/s10751-019-1603-x}, unique-id = {ISI:000468500100001} } |
2019 P-P Crépin, R Guérout and S Reynaud "Improved effective range expansion for Casimir-Polder potential" , Eur. Phys. J. D 73 256. |
Abstract: We study the effective range expansion of scattering on a real Casimir-Polder potential. We use Liouville transformations which transform the potential landscape while preserving the reflection and transmission amplitudes. We decompose the scattering calculation in two more elementary problems, one for the homogeneous 1/z4 potential and the other one for the correction to this idealization. We use the symmetries of the transformed problem and the properties of the scattering matrices to derive an improved effective range expansion leading to a more accurate expansion of scattering amplitudes at low energy. |
BibTeX:
@article{Crepin2019b, author = {Crépin, Pierre-Philippe and Guérout, Romain and Reynaud, Serge}, title = {Improved effective range expansion for Casimir-Polder potential}, journal = {European Physical Journal D}, journal = {Eur. Phys. J. D}, year = {2019}, volume = {73}, pages = {256}, url = {https://doi.org/10.1140/epjd/e2019-100196-2}, doi = {10.1140/epjd/e2019-100196-2} } |
2019 PA Maia Neto, FSS Rosa, LB Pires, AB Moraes, A Canaguier-Durand, R Guérout, A Lambrecht and S Reynaud "Scattering theory of the screened Casimir interaction in electrolytes" , Eur. Phys. J. D 73 178. |
Abstract: We apply the scattering approach to the Casimir interaction between two dielectric half-spaces separated by an electrolyte solution. We take the nonlocal electromagnetic response of the intervening medium into account, which results from the presence of movable ions in solution. In addition to the usual transverse modes, we consider longitudinal channels and their coupling by reflection at the surface of the local dielectric. The Casimir interaction energy is calculated from the matrix describing a round-trip of coupled transverse and longitudinal waves between the interacting surfaces. The nonzero-frequency contributions are approximately unaffected by the presence of ions. We find, at zero frequency, a contribution from longitudinal channels, which is screened over a distance of the order of the Debye length, alongside an unscreened term arising from transverse-magnetic modes. The latter defines the long-distance asymptotic limit for the interaction. |
BibTeX:
@article{MaiaNeto2019, author = {Maia Neto, P. A. and Rosa, F. S. S. and Pires, L. B. and Moraes, A. B. and Canaguier-Durand, A. and Guérout, R. and Lambrecht, A. and Reynaud, S.}, title = {Scattering theory of the screened Casimir interaction in electrolytes}, journal = {European Physical Journal D}, journal = {Eur. Phys. J. D}, year = {2019}, volume = {73}, pages = {178}, doi = {10.1140/epjd/e2019-100225-8}, unique-id = {ISI:000483230100005} } |
2019 VV Nesvizhevsky, AY Voronin, P-P Crépin and S Reynaud "Interference of several gravitational quantum states of antihydrogen in GBAR experiment" , Hyperfine Interactions 240 32. |
Abstract: This analysis is based on a close analogy between two seemingly different experiments: on the gravitational properties of antihydrogen atoms in GBAR and on the neutron whispering gallery. They are described with high accuracy by the similar formalism. Even their parameters match each other quite well. We propose to apply the interferometric method used in the experiment on the neutron whispering gallery to the study of the free fall acceleration of antihydrogen atoms and estimate the accuracy that can be achieved. The proposed method simultaneously reduces statistical uncertainty due to observation of several gravitational quantum states, reduces systematic uncertainty due to the absence of perturbations associated with the excitation of resonant transitions, and can easily be implemented in the experiment. |
BibTeX:
@article{Nesvizhevsky2019, author = {Nesvizhevsky, V. V. and Voronin, A. Yu. and Crépin, P.-P. and Reynaud, S.}, title = {Interference of several gravitational quantum states of antihydrogen in GBAR experiment}, journal = {Hyperfine Interactions}, journal = {Hyperfine Interactions}, year = {2019}, volume = {240}, pages = {32}, doi = {10.1007/s10751-019-1570-2} } |
2019 G Schnoering, Y Rosales-Cabara, H Wendehenne, A Canaguier-Durand and C Genet "Thermally Limited Force Microscopy on Optically Trapped Single Metallic Nanoparticles" , Phys. Rev. Appl. 11 034023. |
Abstract: We propose and evaluate a new type of optical force microscope based on a standing-wave optical trap. Our microscope, calibrated in situ and operating in a dynamic mode, is able to trap, without heating, a single metallic nanoparticle of 150 nm that acts as a highly sensitive probe for external radiation pressure. An Allan-deviation-based stability analysis of the setup yields an optimal 0.1-Hz measurement bandwidth over which the microscope is thermally limited. Over this bandwidth, and with a genuine sine-wave external drive, we demonstrate an optical force resolution down to 3 fN in water at room temperature with a dynamical range for force detection that covers almost 2 orders of magnitude. This resolution is reached in both the confined regime and the freely diffusing regime of the optical trap. In the latter, we measure induced displacements of 10(-11) m on the trapped nanoparticle spatially confined within less than 25 nm along the optical axis. |
BibTeX:
@article{Schnoering2019, author = {Schnoering, Gabriel and Rosales-Cabara, Yoseline and Wendehenne, Hugo and Canaguier-Durand, Antoine and Genet, Cyriaque}, title = {Thermally Limited Force Microscopy on Optically Trapped Single Metallic Nanoparticles}, journal = {Physical Review Applied}, journal = {Phys. Rev. Appl.}, year = {2019}, volume = {11}, pages = {034023}, doi = {10.1103/PhysRevApplied.11.034023} } |
2019 E Stourm, Y Zhang, M Lepers, R Guérout, J Robert, SN Chormaic, K Mølmer and E Brion "Spontaneous emission of a sodium Rydberg atom close to an optical nanofibre" , J. Phys. B 52 045503. |
Abstract: We report on numerical calculations of the spontaneous emission rate of a Rydberg-excited sodium atom in the vicinity of an optical nanofibre. In particular, we study how this rate varies with the distance of the atom to the fibre, the fibre's radius, the symmetry s or p of the Rydberg state as well as its principal quantum number. We find that a fraction of the spontaneously emitted light can be captured and guided along the fibre. This suggests that such a setup could be used for networking atomic ensembles, manipulated in a collective way due to the Rydberg blockade phenomenon. |
BibTeX:
@article{Stourm2019, author = {E Stourm and Y Zhang and M Lepers and R Guérout and J Robert and S Nic Chormaic and K Mølmer and E Brion}, title = {Spontaneous emission of a sodium Rydberg atom close to an optical nanofibre}, journal = {Journal of Physics B: Atomic, Molecular and Optical Physics}, journal = {J. Phys. B}, year = {2019}, volume = {52}, pages = {045503}, doi = {10.1088/1361-6455/aafb95} } |
2019 P Touboul, G Métris, M Rodrigues, Y André, Q Baghi, J Bergé, D Boulanger, S Bremer, R Chhun, B Christophe, V Cipolla, T Damour, P Danto, H Dittus, P Fayet, B Foulon, P-Y Guidotti, E Hardy, P-A Huynh, C Lämmerzahl, V Lebat, F Liorzou, M List, I Panet, S Pires, B Pouilloux, P Prieur, S Reynaud, B Rievers, A Robert, H Selig, L Serron, T Sumner and P Visser "Space test of the equivalence principle: first results of the MICROSCOPE mission" , Classical and Quantum Gravity 36 225006. |
Abstract: The weak equivalence principle (WEP), stating that two bodies of different compositions and/or mass fall at the same rate in a gravitational field (universality of free fall), is at the very foundation of general relativity. The MICROSCOPE mission aims to test its validity to a precision of 10ˆ-15, two orders of magnitude better than current on-ground tests, by using two masses of different compositions (titanium and platinum alloys) on a quasi-circular trajectory around the Earth. This is realised by measuring the accelerations inferred from the forces required to maintain the two masses exactly in the same orbit. Any significant difference between the measured accelerations, occurring at a defined frequency, would correspond to the detection of a violation of the WEP, or to the discovery of a tiny new type of force added to gravity. MICROSCOPE's first results show no hint for such a difference, expressed in terms of Eotvos parameter (both 1 uncertainties) for a titanium and platinum pair of materials. This result was obtained on a session with 120 orbital revolutions representing 7% of the current available data acquired during the whole mission. The quadratic combination of 1 uncertainties leads to a current limit on of about 1.3 10ˆ-14. |
BibTeX:
@article{Touboul2019, author = {Pierre Touboul and Gilles Métris and Manuel Rodrigues and Yves André and Quentin Baghi and Joel Bergé and Damien Boulanger and Stefanie Bremer and Ratana Chhun and Bruno Christophe and Valerio Cipolla and Thibault Damour and Pascale Danto and Hansjoerg Dittus and Pierre Fayet and Bernard Foulon and Pierre-Yves Guidotti and Emilie Hardy and Phuong-Anh Huynh and Claus Lämmerzahl and Vincent Lebat and Françoise Liorzou and Meike List and Isabelle Panet and Sandrine Pires and Benjamin Pouilloux and Pascal Prieur and Serge Reynaud and Benny Rievers and Alain Robert and Hanns Selig and Laura Serron and Timothy Sumner and Pieter Visser}, title = {Space test of the equivalence principle: first results of the MICROSCOPE mission}, journal = {Classical and Quantum Gravity}, journal = {Classical and Quantum Gravity}, year = {2019}, volume = {36}, pages = {225006}, doi = {10.1088/1361-6382/ab4707} } |
2019 S Vasiliev, J Ahokas, J Järvinen, V Nesvizhevsky, A Voronin, F Nez and S Reynaud "Gravitational and matter-wave spectroscopy of atomic hydrogen at ultra-low energies" , Hyperfine Interactions 240 14. |
Abstract: We propose experiments with atomic hydrogen gas at ultra-low temperatures T |
BibTeX:
@article{Vasiliev2019, author = {Vasiliev, Sergey and Ahokas, Janne and Järvinen, Jarno and Nesvizhevsky, Valery and Voronin, Alexei and Nez, François and Reynaud, Serge}, title = {Gravitational and matter-wave spectroscopy of atomic hydrogen at ultra-low energies}, journal = {Hyperfine Interactions}, journal = {Hyperfine Interactions}, year = {2019}, volume = {240}, pages = {14}, doi = {10.1007/s10751-018-1551-x} } |
2018 B Canuel, A Bertoldi, L Amand, EP di Borgo, T Chantrait, C Danquigny, MD Alvarez, B Fang, A Freise, R Geiger, J Gillot, S Henry, J Hinderer, D Holleville, J Junca, G Lefevre, M Merzougui, N Mielec, T Monfret, S Pelisson, M Prevedelli, S Reynaud, I Riou, Y Rogister, S Rosat, E Cormier, A Landragin, W Chaibi, S Gaffet and P Bouyer "Exploring gravity with the MIGA large scale atom interferometer" , Sci Rep 8 14064. |
Abstract: We present the MIGA experiment, an underground long baseline atom interferometer to study gravity at large scale. The hybrid atom-laser antenna will use several atom interferometers simultaneously interrogated by the resonant mode of an optical cavity. The instrument will be a demonstrator for gravitational wave detection in a frequency band (100 mHz-1 Hz) not explored by classical ground and space-based observatories, and interesting for potential astrophysical sources. In the initial instrument configuration, standard atom interferometry techniques will be adopted, which will bring to a peak strain sensitivity of 2 center dot 10(-13)/root Hz at 2 Hz. This demonstrator will enable to study the techniques to push further the sensitivity for the future development of gravitational wave detectors based on large scale atom interferometers. The experiment will be realized at the underground facility of the Laboratoire Souterrain a Bas Bruit (LSBB) in Rustrel-France, an exceptional site located away from major anthropogenic disturbances and showing very low background noise. In the following, we present the measurement principle of an in-cavity atom interferometer, derive the method for Gravitational Wave signal extraction from the antenna and determine the expected strain sensitivity. We then detail the functioning of the different systems of the antenna and describe the properties of the installation site. |
BibTeX:
@article{Canuel2018, author = {Canuel, B. and Bertoldi, A. and Amand, L. and di Borgo, E. Pozzo and Chantrait, T. and Danquigny, C. and Alvarez, M. Dovale and Fang, B. and Freise, A. and Geiger, R. and Gillot, J. and Henry, S. and Hinderer, J. and Holleville, D. and Junca, J. and Lefevre, G. and Merzougui, M. and Mielec, N. and Monfret, T. and Pelisson, S. and Prevedelli, M. and Reynaud, S. and Riou, I. and Rogister, Y. and Rosat, S. and Cormier, E. and Landragin, A. and Chaibi, W. and Gaffet, S. and Bouyer, P.}, title = {Exploring gravity with the MIGA large scale atom interferometer}, journal = {Scientific Reports}, journal = {Sci Rep}, year = {2018}, volume = {8}, pages = {14064}, doi = {10.1038/s41598-018-32165-z}, unique-id = {ISI:000444575100001} } |
2018 R Guérout, G-L Ingold, A Lambrecht and S Reynaud "Accounting for Dissipation in the Scattering Approach to the Casimir Energy" , Symmetry 10 37. |
Abstract: We take dissipation into account in the derivation of the Casimir energy formula between two objects placed in a surrounding medium. The dissipation channels are considered explicitly in order to take advantage of the unitarity of the full scattering processes. We demonstrate that the Casimir energy is given by a scattering formula expressed in terms of the scattering amplitudes coupling internal channels and taking dissipation into account implicitly. We prove that this formula is also valid when the surrounding medium is dissipative. |
BibTeX:
@article{Guerout2018, author = {Guérout, Romain and Ingold, Gert-Ludwig and Lambrecht, Astrid and Reynaud, Serge}, title = {Accounting for Dissipation in the Scattering Approach to the Casimir Energy}, journal = {Symmetry}, journal = {Symmetry}, year = {2018}, volume = {10}, pages = {37}, doi = {10.3390/sym10020037}, unique-id = {ISI:000427543400005} } |
2018 VV Nesvizhevsky, AY Voronin, A Lambrecht, S Reynaud, EV Lychagin, AY Muzychka, GV Nekhaev and AV Strelkov "The method of UCN ``small heating'' measurement in the big gravitational spectrometer (BGS) and studies of this effect on Fomblin oil Y-HVAC 18/8" , Rev. Sci. Instrum. 89 023501. |
Abstract: The Big Gravitational Spectrometer (BGS) takes advantage of the strong influence of the Earth's gravity on the motion of ultracold neutrons (UCNs) that makes it possible to shape and measure UCN spectra. We optimized the BGS to investigate the ``small heating'' of UCNs, that is, the inelastic reflection of UCNs from a surface accompanied by an energy change comparable with the initial UCN energy. UCNs whose energy increases are referred to as ``Vaporized UCNs'' (VUCNs). The BGS provides the narrowest UCN spectra of a few cm and the broadest ``visible'' VUCN energy range of up to similar to 150 cm (UCN energy is given in units of its maximum height in the Earth's gravitational field, where 1.00 cm approximate to 1.02 neV). The dead-zone between the UCN and VUCN spectra is the narrowest ever achieved (a few cm). We performed measurements with and without samples without breaking vacuum. BGS provides the broadest range of temperatures (77-600 K) and the highest sensitivity to the small heating effect, up to similar to 10(-8) per bounce, i.e., two orders of magnitude higher than the sensitivity of alternative methods. We describe the method to measure the probability of UCN ``small heating'' using the BGS and illustrate it with a study of samples of the hydrogen-free oil Fomblin Y-HVAC 18/8. The data obtained are well reproducible, do not depend on sample thickness, and do not evolve over time. The measured model-independent probability P+ of UCN small heating from an energy ``mono-line'' 30.2 +/- 2.5 cm to the energy range 35-140 cm is in the range (1.05 +/- 0.02(stat)) x 10(-5) (1.31 +/- 0.24(stat)) x 10(-5) at a temperature of 24 degrees C. The associated systematic uncertainty would disappear if a VUCN spectrum shape were known, for instance, from a particular model of small heating. This experiment provides the most precise and reliable value of small heating probability on Fomblin measured so far. These results are of importance for studies of UCN small heating as well as for analyzing and designing neutron lifetime experiments. |
BibTeX:
@article{Nesvizhevsky2018, author = {Nesvizhevsky, V. V. and Voronin, A. Yu and Lambrecht, A. and Reynaud, S. and Lychagin, E. V. and Muzychka, A. Yu and Nekhaev, G. V. and Strelkov, |
2018 G Schnoering, LV Poulikakos, Y Rosales-Cabara, A Canaguier-Durand, DJ Norris and C Genet "Three-Dimensional Enantiomeric Recognition of Optically Trapped Single Chiral Nanoparticles" , Phys. Rev. Lett. 121 023902. |
Abstract: We optically trap freestanding single metallic chiral nanoparticles using a standing-wave optical tweezer. We also incorporate within the trap a polarimetric setup that allows us to perform in situ chiral recognition of single enantiomers. This is done by measuring the S3 component of the Stokes vector of a light beam scattered off the trapped nanoparticle in the forward direction. This unique combination of optical trapping and chiral recognition, all implemented within a single setup, opens new perspectives towards the control, recognition, and manipulation of chiral objects at nanometer scales. |
BibTeX:
@article{Schnoering2018, author = {Schnoering, Gabriel and Poulikakos, Lisa V. and Rosales-Cabara, Yoseline and Canaguier-Durand, Antoine and Norris, David J. and Genet, Cyriaque}, title = {Three-Dimensional Enantiomeric Recognition of Optically Trapped Single Chiral Nanoparticles}, journal = {Phys. Rev. Lett.}, journal = {Phys. Rev. Lett.}, year = {2018}, volume = {121}, pages = {023902}, url = {https://link.aps.org/doi/10.1103/PhysRevLett.121.023902}, doi = {10.1103/PhysRevLett.121.023902} } |
2018 J Szczepkowski, A Grochola, P Kowalczyk, O Dulieu, R Guerout, PS Zuchowski and W Jastrzebski "Experimental and theoretical study of the B(2)(2)Sigma(+) -> X(1)(2)Sigma(+) system in the KSr molecule" , J. Quant. Spectrosc. Radiat. Transf. 210 217-224. |
Abstract: Spectral bands for the B(2)(2)Sigma(+) -> X(1)(2)Sigma(+) electronic transition in the doubly-polar open-shell KSr molecule are recorded at moderate resolution using the thermoluminescence technique. The spectra are simulated using three kinds of advanced electronic structure calculations, allowing for an assessment of their accuracy on one hand, and for the derivation of fundamental spectroscopic constants of the X(1)(2)Sigma(+) KSr ground state and the excited electronic state B(2)(2)Sigma(+), on the other hand. These results should facilitate further studies aiming at creating ultracold bosonic or fermionic KSr molecules. |
BibTeX:
@article{Szczepkowski2018, author = {Szczepkowski, Jacek and Grochola, Anna and Kowalczyk, Pawel and Dulieu, Olivier and Guerout, Romain and Zuchowski, Piotr S. and Jastrzebski, Wlodzimierz}, title = {Experimental and theoretical study of the B(2)(2)Sigma(+) -> X(1)(2)Sigma(+) system in the KSr molecule}, journal = {JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER}, journal = {J. Quant. Spectrosc. Radiat. Transf.}, year = {2018}, volume = {210}, pages = {217-224}, doi = {10.1016/j.jqsrt.2018.02.020}, unique-id = {ISI:000430756800023} } |
2017 N Cherroret, P-P Crépin, R Guérout, A Lambrecht and S Reynaud "Casimir-Polder force fluctuations as spatial probes of dissipation in metals" , EPL 117 63001. |
Abstract: We study the spatial fluctuations of the Casimir-Polder force experienced by an atom or a small sphere moved above a metallic plate at fixed separation distance. We demonstrate that unlike the mean force, the magnitude of these fluctuations crucially relies on the relaxation of conduction electron in the metallic bulk, and even achieves values that differ by orders of magnitude depending on the amount of dissipation. We also discover that fluctuations suffer a spectacular decrease at large distances in the case of nonzero temperature. |
BibTeX:
@article{Cherroret2017, author = {Cherroret, N. and Crépin,P.-P. and Guérout, R. and Lambrecht, A. and Reynaud, S.}, title = {Casimir-Polder force fluctuations as spatial probes of dissipation in metals}, journal = {EPL}, journal = {EPL}, year = {2017}, volume = {117}, pages = {63001}, doi = {10.1209/0295-5075/117/63001} } |
2017 PP Crépin, G Dufour, R Guérout, A Lambrecht and S Reynaud "Casimir-Polder shifts on quantum levitation states" , Phys. Rev. A 95 032501 |
Abstract: An ultracold atom above a horizontal mirror experiences quantum reflection from the attractive Casimir-Polder interaction, which holds it against gravity and leads to quantum levitation states. We analyze this system by using a Liouville transformation of the Schrödinger equation and a Langer coordinate adapted to problems with a classical turning point. Reflection on the Casimir-Polder attractive well is replaced by reflection on a repulsive wall, and the problem is then viewed as an ultracold atom trapped inside a cavity with gravity and Casimir-Polder potentials acting, respectively, as top and bottom mirrors. We calculate numerically Casimir-Polder shifts of the energies of the cavity resonances and propose an approximate treatment which is precise enough to discuss spectroscopy experiments aimed at tests of the weak-equivalence principle on antihydrogen. We also discuss the lifetimes by calculating complex energies associated with cavity resonances. |
BibTeX:
@article{Crepin2017, author = {Crépin, P. -P. and Dufour, G. and Guérout, R. and Lambrecht, A. and Reynaud, S.}, title = {Casimir-Polder shifts on quantum levitation states}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2017}, volume = {95}, number = {3}, article-number = {032501}, doi = {10.1103/PhysRevA.95.032501}, unique-id = {ISI:000395981900005} } |
2017 PP Crépin, EA Kupriyanova, R Guérout, A Lambrecht, VV Nesvizhevsky, S Reynaud, S Vasiliev and AY Voronin "Quantum reflection of antihydrogen from a liquid helium film" , EPL 119 33001 |
Abstract: We study the quantum reflection of ultracold antihydrogen atoms bouncing on the surface of a liquid helium film. The Casimir-Polder potential and quantum reflection are calculated for different thicknesses of the film supported by different substrates. Antihydrogen can be protected from annihilation for as long as 1.3 s on a bulk of liquid He-4, and 1.7 s for liquid He-3. These large lifetimes open interesting perspectives for spectroscopic measurements of the free fall acceleration of antihydrogen. Variation of the scattering length with the thickness of a film of helium shows interferences which we interpret through a Liouville transformation of the quantum reflection problem. |
BibTeX:
@article{Crepin2017a, author = {Crépin, P. -P. and Kupriyanova, E. A. and Guérout, R. and Lambrecht, A. and Nesvizhevsky, V. V. and Reynaud, S. and Vasiliev, S. and Voronin, A. Yu.}, title = {Quantum reflection of antihydrogen from a liquid helium film}, journal = {EPL}, journal = {EPL}, year = {2017}, volume = {119}, article-number = {33001}, doi = {10.1209/0295-5075/119/33001}, unique-id = {ISI:000415019400009} } |
2017 KA Milton, Y Li, P Kalauni, P Parashar, R Guérout, G-L Ingold, A Lambrecht and S Reynaud "Negative entropies in Casimir and Casimir-Polder interactions" , Fortschritte der Physik 65 1600047. |
Abstract: It has been increasingly becoming clear that Casimir and Casimir-Polder entropies may be negative in certain regions of temperature and separation. In fact, the occurrence of negative entropy seems to be a nearly ubiquitous phenomenon. This is most highlighted in the quantum vacuum interaction of a nanoparticle with a conducting plate or between two nanoparticles. It has been argued that this phenomenon does not violate physical intuition, since the total entropy, including the self-entropies of the plate and the nanoparticle, should be positive. New calculations, in fact, seem to bear this out at least in certain cases. |
BibTeX:
@article{Milton2017, author = {Milton, Kimball A. and Li, Yang and Kalauni, Pushpa and Parashar, Prachi and Guérout, Romain and Ingold, Gert-Ludwig and Lambrecht, Astrid and Reynaud, Serge}, title = {Negative entropies in Casimir and Casimir-Polder interactions}, journal = {Fortschritte der Physik}, journal = {Fortschritte der Physik}, year = {2017}, volume = {65}, pages = {1600047}, doi = {10.1002/prop.201600047} } |
2017 S Reynaud and A Lambrecht "Casimir Forces and Vacuum Energy" , In Quantum Optics and Nanophotonics. 407-455. |
Abstract: The present notes are organized as the lectures given at the Les Houches Summer School ``Quantum Optics and Nanophotonics'' in August 2013. The first section contains an introduction and a description of the current state-of-the-art for Casimir force measurements and their comparison with theory. The second and third sections are a pedagogical presentation of the main features of the theory of Casimir forces for 1-dimensional model systems and for mirrors in 3-dimensional space. |
BibTeX:
@inproceedings{Reynaud2017, author = {Reynaud, S. and Lambrecht, A.}, title = {Casimir Forces and Vacuum Energy}, booktitle = {Quantum Optics and Nanophotonics}, year = {2017}, pages = {407--455}, url = {https://global.oup.com/academic/product/quantum-optics-and-nanophotonics-9780198768609?q=978-0-19-876860-9} } |
2017 P Touboul, G Metris, M Rodrigues, Y Andre, Q Baghi, J Berge, D Boulanger, S Bremer, P Carle, R Chhun, B Christophe, V Cipolla, T Damour, P Danto, H Dittus, P Fayet, B Foulon, C Gageant, P-Y Guidotti, D Hagedorn, E Hardy, P-A Huynh, H Inchauspe, P Kayser, S Lala, C Laemmerzahl, V Lebat, P Leseur, F Liorzou, M List, F Loeffler, I Panet, B Pouilloux, P Prieur, A Rebray, S Reynaud, B Rievers, A Robert, H Selig, L Serron, T Sumner, N Tanguy and P Visser "MICROSCOPE Mission: First Results of a Space Test of the Equivalence Principle" , Phys. Rev. Lett. 119 231101 |
Abstract: According to the weak equivalence principle, all bodies should fall at the same rate in a gravitational field. The MICROSCOPE satellite, launched in April 2016, aims to test its validity at the 10(-15) precision level, by measuring the force required to maintain two test masses (of titanium and platinum alloys) exactly in the same orbit. A nonvanishing result would correspond to a violation of the equivalence principle, or to the discovery of a new long-range force. Analysis of the first data gives delta(Ti, Pt) = [-1 +/- 9(stat) +/- 9(syst)] x 10(-15) (1 sigma statistical uncertainty) for the titanium-platinum Eotvos parameter characterizing the relative difference in their free-fall accelerations. |
BibTeX:
@article{Touboul2017, author = {Touboul, Pierre and Metris, Gilles and Rodrigues, Manuel and Andre, Yves and Baghi, Quentin and Berge, Joel and Boulanger, Damien and Bremer, Stefanie and Carle, Patrice and Chhun, Ratana and Christophe, Bruno and Cipolla, Valerio and Damour, Thibault and Danto, Pascale and Dittus, Hansjoerg and Fayet, Pierre and Foulon, Bernard and Gageant, Claude and Guidotti, Pierre-Yves and Hagedorn, Daniel and Hardy, Emilie and Phuong-Anh Huynh and Inchauspe, Henri and Kayser, Patrick and Lala, Stephanie and Laemmerzahl, Claus and Lebat, Vincent and Leseur, Pierre and Liorzou, Francoise and List, Meike and Loeffler, Frank and Panet, Isabelle and Pouilloux, Benjamin and Prieur, Pascal and Rebray, Alexandre and Reynaud, Serge and Rievers, Benny and Robert, Alain and Selig, Hanns and Serron, Laura and Sumner, Timothy and Tanguy, Nicolas and Visser, Pieter}, title = {MICROSCOPE Mission: First Results of a Space Test of the Equivalence Principle}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2017}, volume = {119}, article-number = {231101}, doi = {10.1103/PhysRevLett.119.231101}, unique-id = {ISI:000416947500002} } |
2016 D Banerjee, F Biraben, M Charlton, P Clade, P Comini, P Crivelli, O Dalkarov, P Debu, L Dodd, A Douillet, G Dufour, P Dupre, S Eriksson, P Froelich, P Grandemange, S Guellati, R Guerout, M Heinrich, P-A Hervieux, L Hilico, A Husson, P Indelicato, S Jonsell, J-P Karr, K Khabarova, SK Kim, Y Kim, N Kolachevsky, N Kuroda, A Lambrecht, AMM Leite, L Liszkay, P Lotrus, D Lunney, N Madsen, G Manfredi, B Mansouli, Y Matsuda, A Mohri, G Mornacchi, V Nesvizhevsky, F Nez, P Perez, C Regenfus, J-M Rey, J-M Reymond, J-Y Rousse, S Reynaud, A Rubbia, Y Sacquin, F Schmidt-Kaler, N Sillitoe, M Staszczak, H Torii, JM Heinrich, B Vallage, M Valdes, DP van der Werf, A Voronin, J Walz, S Wolf, S Wronka and Y Yamazaki "Towards a test of the Weak Equivalence Principle of gravity using anti-hydrogen at CERN" , In CPEM 2016. 7540781. |
Abstract: The aim of the GBAR (Gravitational Behavior of Antimatter at Rest) experiment is to measure the free fall acceleration of an antihydrogen atom, in the terrestrial gravitational field at CERN and therefore test the Weak Equivalence Principle with antimatter. The aim is to measure the local gravity with a 1% uncertainty which can be reduced to few parts of 10^-3. |
BibTeX:
@inproceedings{Banerjee2016, author = {Banerjee, D. and Biraben, F. and Charlton, M. and Clade, P. and Comini, P. and Crivelli, P. and Dalkarov, O. and Debu, P. and Dodd, L. and Douillet, A. and Dufour, G. and Dupre, P. and Eriksson, S. and Froelich, P. and Grandemange, P. and Guellati, S. and Guerout, R. and Heinrich, M. and Hervieux, P.-A. and Hilico, L. and Husson, A. and Indelicato, P. and Jonsell, S. and Karr, J.-P. and Khabarova, K. and Kim, S. K. and Kim, Y. and Kolachevsky, N. and Kuroda, N. and Lambrecht, A. and Leite, A. M. M. and Liszkay, L. and Lotrus, P. and Lunney, D. and Madsen, N. and Manfredi, G. and Mansouli, B. and Matsuda, Y. and Mohri, A. and Mornacchi, G. and Nesvizhevsky, V. and Nez, F. and Perez, P. and Regenfus, C. and Rey, J.-M. and Reymond, J.-M. and Rousse, J.-Y. and Reynaud, S. and Rubbia, A. and Sacquin, Y. and Schmidt-Kaler, F. and Sillitoe, N. and Staszczak, M. and Torii, H. and Heinrich, J. M. and Vallage, B. and Valdes, M. and van der Werf, D. P. and Voronin, A. and Walz, J. and Wolf, S. and Wronka, S. and Yamazaki, Y.}, title = {Towards a test of the Weak Equivalence Principle of gravity using anti-hydrogen at CERN}, booktitle = {CPEM 2016}, year = {2016}, pages = {7540781}, doi = {10.1109/CPEM.2016.7540781}, unique-id = {ISI:000383955100330} } |
2016 A Canaguier-Durand and R Carminati "Quantum coherence of light emitted by two single-photon sources in a structured environment" , Phys. Rev. A 93 033836 |
Abstract: We develop a theoretical framework for the analysis of the quantum coherence of light emitted by two independent single-photon sources in an arbitrary environment. The theory provides design rules for the control of the degree of quantum coherence in terms of classical quantities widely used in nanophotonics. As an important example, we derive generalized conditions to generate superradiant and subradiant states of the emitters and demonstrate the ability of a structured environment to induce long-range quantum coherence. These results should have broad applications in quantum nanophotonics and for the sensing of fluorescent sources in complex environments. |
BibTeX:
@article{Canaguier-Durand2016, author = {Canaguier-Durand, Antoine and Carminati, Remi}, title = {Quantum coherence of light emitted by two single-photon sources in a structured environment}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2016}, volume = {93}, number = {3}, article-number = {033836}, doi = {10.1103/PhysRevA.93.033836}, unique-id = {ISI:000372485200021} } |
2016 A Canaguier-Durand and C Genet "Plasmonic lateral forces on chiral spheres" , J. Optics 18 015007 |
Abstract: We show that the optical force exerted on a finite size chiral sphere by a surface plasmon mode has a component along a direction perpendicular to the plasmon linear momentum. We reveal how this chiral lateral force, pointing in opposite directions for opposite enantiomers, stems from an angular-to-linear crossed momentum transfer involving the plasmon transverse spin angular momentum density and mediated by the chirality of the sphere. Our multipolar approach allows us discussing the inclusion of the recoil term in the force on a small sphere taken in the dipolar limit and observing sign inversions of the lateral chiral force when the size of the sphere increases. |
BibTeX:
@article{Canaguier-Durand2016a, author = {Canaguier-Durand, Antoine and Genet, Cyriaque}, title = {Plasmonic lateral forces on chiral spheres}, journal = {JOURNAL OF OPTICS}, journal = {J. Optics}, year = {2016}, volume = {18}, number = {1}, article-number = {015007}, doi = {10.1088/2040-8978/18/1/015007}, unique-id = {ISI:000367187000018} } |
2016 C Cohen-Tannoudji and S Reynaud "Dressed-atom description of resonance fluorescence of atoms coupled to intense laser beams" , J. Phys. B 49 200502 |
Abstract: This viewpoint relates to an article by C Cohen-Tannoudji and S Reynaud (1977 J. Phys. B: At. Mol. Opt. Phys. 10 345-63) and was published as part of a series of viewpoints celebrating 50 of the most influential papers published in the Journal of Physics series, which is celebrating its 50th anniversary. |
BibTeX:
@article{Cohen-Tannoudji2016, author = {Cohen-Tannoudji, Claude and Reynaud, Serge}, title = {Dressed-atom description of resonance fluorescence of atoms coupled to intense laser beams}, journal = {JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS}, journal = {J. Phys. B}, year = {2016}, volume = {49}, number = {20}, article-number = {200502}, doi = {10.1088/0953-4075/49/20/200502}, unique-id = {ISI:000385428500002} } |
2016 M Donaire and A Lambrecht "Velocity-dependent dipole forces on an excited atom" , Phys. Rev. A 93 022701 |
Abstract: We present a time-dependent calculation of the velocity-dependent forces which act on an excited atomic dipole in relative motion with respect to ground state atoms of a different kind. Both its interaction with a single atom and with a dilute atomic plate are evaluated. In either case, the total force consists of a conservative van der Waals component and a nonconservative Rontgen component. On physical grounds, the former corresponds to the velocity-dependent recoil experienced by the excited atom in the processes of absorption and emission of the photons that it exchanges with the ground-state atoms on a periodic basis. The latter corresponds to the time-variation of the Rontgen momentum, which is also mediated by the periodic exchange of quasiresonant photons. We find that, at leading order, all these interactions are linear in velocity. In the nonretarded regime the van der Waals force dominates, being antiparallel to the velocity. On the contrary, in the retarded regime the velocity-dependent forces oscillate in space, van der Waals and Rontgen forces are of the same order in the atom-atom interaction, and the Rontgen component dominates in the atom-surface interaction. |
BibTeX:
@article{Donaire2016, author = {Donaire, M. and Lambrecht, A.}, title = {Velocity-dependent dipole forces on an excited atom}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2016}, volume = {93}, number = {2}, article-number = {022701}, doi = {10.1103/PhysRevA.93.022701}, unique-id = {ISI:000369364100010} } |
2016 M Donaire "Two-atom interaction energies with one atom in an excited state: van der Waals potentials versus level shifts" , Phys. Rev. A 93 052706 |
Abstract: I revisit the problem of the interaction between two dissimilar atoms with one atom in an excited state, recently addressed by Berman [Phys. Rev. A 91, 042127 (2015)], Donaire et al. [Phys. Rev. Lett. 115, 033201 (2015)], and Milonni and Rafsanjani [Phys. Rev. A 92, 062711 (2015)], for which precedent approaches have given conflicting results. In the first place, I discuss to what extent these works provide equivalent results. I show that the phase-shift rate of the two-atom wave function computed by Berman, the van der Waals potential of the excited atom by Donaire et al., and the level shift of the excited atom by Milonni and Rafsanjani possess equivalent expressions in the quasistationary approximation. In addition, I show that the level shift of the ground-state atom computed by Milonni and Rafsanjani is equivalent to its van der Waals potential. A diagrammatic representation of all those quantities is provided. The equivalences among them are, however, not generic. In particular, it is found that for the case of the interaction between two identical atoms excited, the phase-shift rate and the van der Waals potentials differ. Concerning the conflicting results of previous approaches in regards to the spatial oscillation of the interactions, I conclude, in agreement with Berman and with Milonni and Rafsanjani, that they refer to different physical quantities. The impacts of free-space dissipation and finite excitation rates on the dynamics of the potentials are analyzed. In contrast with Milonni and Rafsanjani, the oscillatory versus monotonic spatial forms of the potentials of each atom are found not to be related to the reversible versus irreversible nature of the excitation transfer involved. |
BibTeX:
@article{Donaire2016a, author = {Donaire, M.}, title = {Two-atom interaction energies with one atom in an excited state: van der Waals potentials versus level shifts}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2016}, volume = {93}, number = {5}, article-number = {052706}, doi = {10.1103/PhysRevA.93.052706}, unique-id = {ISI:000376239900007} } |
2016 M Donaire
"Net force on an asymmetrically excited two-atom system from vacuum fluctuations" , Phys. Rev. A 94 062701. |
Abstract: A net force on a system of two dissimilar atoms, one of which is excited, is shown to result from their van der Waals interaction. It is accompanied by a net transfer of linear momentum to the quantum fluctuations of the electromagnetic field. This momentum results from the asymmetric interference of the virtual photons scattered off each atom along the interatomic direction, which is in itself a manifestation of the optical theorem. Ultimately, the virtual photons' momentum, of equal strength and opposite direction to the momentum gained by the two-atom system while excited, is released through directional spontaneous emission, which allows for an indirect measure, a posteriori, of the total force on the excited system. A quantitative prediction is made in a two-alkali atom system. It is conjectured that a net force and hence a nonzero momentum of quantum fluctuations take place in any asymmetrically excited system. |
BibTeX:
@article{Donaire2016b, author = {Donaire, M.}, title = {Net force on an asymmetrically excited two-atom system from vacuum |
2016 R Guerout, A Lambrecht, KA Milton and S Reynaud "Lifshitz-Matsubara sum formula for the Casimir pressure between magnetic metallic mirrors" , Phys. Rev. E 93 022108 |
Abstract: We examine the conditions of validity for the Lifshitz-Matsubara sum formula for the Casimir pressure between magnetic metallic plane mirrors. As in the previously studied case of nonmagnetic materials [Guerout et al., Phys. Rev. E 90, 042125 (2014)], we recover the usual expression for the lossy model of optical response, but not for the lossless plasma model. We also show that the modes associated with the Foucault currents play a crucial role in the limit of vanishing losses, in contrast to expectations. |
BibTeX:
@article{Guerout2016, author = {Guerout, R. and Lambrecht, A. and Milton, K. A. and Reynaud, S.}, title = {Lifshitz-Matsubara sum formula for the Casimir pressure between magnetic metallic mirrors}, journal = {PHYSICAL REVIEW E}, journal = {Phys. Rev. E}, year = {2016}, volume = {93}, number = {2}, article-number = {022108}, doi = {10.1103/PhysRevE.93.022108}, unique-id = {ISI:000369439100003} } |
2016 R Guerout, A Lambrecht, KA Milton and S Reynaud "Reply to ``Comment on `Lifshitz-Matsubara sum formula for the Casimir pressure between magnetic metallic mirrors' ''" , Phys. Rev. E 94 026102 |
Abstract: We reply to the ``Comment on `Lifshitz-Matsubara sum formula for the Casimir pressure between magnetic metallic mirrors.' '' We believe the comment misrepresents our papers, and fails to provide a plausible resolution to the conflict between theory and experiment. |
BibTeX:
@article{Guerout2016a, author = {Guerout, R. and Lambrecht, A. and Milton, K. A. and Reynaud, S.}, title = {Reply to ``Comment on `Lifshitz-Matsubara sum formula for the Casimir pressure between magnetic metallic mirrors' ''}, journal = {PHYSICAL REVIEW E}, journal = {Phys. Rev. E}, year = {2016}, volume = {94}, number = {2}, article-number = {026102}, doi = {10.1103/PhysRevE.94.026102}, unique-id = {ISI:000381417900007} } |
2016 A Maury, M Donaire, MP Gorza, A Lambrecht and R Guerout "Surface-modified Wannier-Stark states in a one-dimensional optical lattice" , Phys. Rev. A 94 053602 |
Abstract: We study the energy spectrum of atoms trapped in a vertical one-dimensional optical lattice in close proximity to a reflective surface. We propose an effective model to describe the interaction between the atoms and the surface at any distance. Our model includes the long-range Casimir-Polder potential together with a short-range Lennard-Jones potential, which are considered nonperturbatively with respect to the optical lattice potential. We find an intricate energy spectrum which contains a pair of loosely bound states localized close to the surface in addition to a surface-modified Wannier-Stark ladder at long distances. Atomic interferometry involving those loosely bound atom-surface states is proposed to probe the adsorption dynamics of atoms on mirrors. |
BibTeX:
@article{Maury2016, author = {Maury, A. and Donaire, M. and Gorza, M. -P. and Lambrecht, A. and Guerout, R.}, title = {Surface-modified Wannier-Stark states in a one-dimensional optical lattice}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2016}, volume = {94}, number = {5}, article-number = {053602}, doi = {10.1103/PhysRevA.94.053602}, unique-id = {ISI:000386653800007} } |
2016 AY Voronin, VV Nesvizhevsky, G Dufour and S Reynaud "Quantum ballistic experiment on antihydrogen fall" , J. Phys. B 49 054001 |
Abstract: We propose an approach to measuring gravitational mass of antihydrogen ((H) over bar) based on interferometry of time distribution of free-fall events of antiatoms. Our method consists of preparing a coherent superposition of quantum states of (H) over bar localized near a material surface in the gravitational field of the Earth, and then observing the time distribution of annihilation events after the free-fall of the initially prepared superposition from a given height to a detector plate. We show that the time distribution of interest is mapped to a precisely predictable velocity distribution of the initial wave packet. This approach is combined with production of a coherent superposition of gravitational states by inducing a resonant transition using an oscillating gradient magnetic field. We show that the relative accuracy of measuring the (H) over bar atom gravitational mass can be achieved with this approach is 10(-4), with 10(3) antiatoms settled in lowest gravitational states. |
BibTeX:
@article{Voronin2016, author = {Voronin, A. Yu and Nesvizhevsky, V. V. and Dufour, G. and Reynaud, S.}, title = {Quantum ballistic experiment on antihydrogen fall}, journal = {JOURNAL OF PHYSICS B}, journal = {J. Phys. B}, year = {2016}, volume = {49}, number = {5}, article-number = {054001}, doi = {10.1088/0953-4075/49/5/054001}, unique-id = {ISI:000370601400002} } |
2016 AY Voronin, EA Kupriyanova, A Lambrecht, VV Nesvizhevsky and S Reynaud "Quenching of antihydrogen gravitational states by surface charges" , J. Phys. B 49 205003 |
Abstract: We study the effect of the quenching of antihydrogen quantum states near the surface of a material in the Earth's gravitational field by local charges randomly distributed along a mirror surface. The quenching reduces the probability of quantum reflection because of the additional atom-charge interaction, and thus the nonadiabatic transitions to excited gravitational states. Our approach is suitable when accounting for quenching caused by any kind of additional interaction with a characteristic range much smaller than the typical gravitational state wavelength. |
BibTeX:
@article{Voronin2016a, author = {Voronin, A. Yu and Kupriyanova, E. A. and Lambrecht, A. and Nesvizhevsky, V. V. and Reynaud, S.}, title = {Quenching of antihydrogen gravitational states by surface charges}, journal = {JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS}, journal = {J. Phys. B}, year = {2016}, volume = {49}, number = {20}, article-number = {205003}, doi = {10.1088/0953-4075/49/20/205003}, unique-id = {ISI:000385680600002} } |
2015 B Altschul, QG Bailey, L Blanchet, K Bongs, P Bouyer, L Cacciapuoti, S Capozziello, N Gaaloul, D Giulini, J Hartwig, L Iess, P Jetzer, A Landragin, E Rasel, S Reynaud, S Schiller, C Schubert, F Sorrentino, U Sterr, JD Tasson, GM Tino, P Tuckey and P Wolf "Quantum tests of the Einstein Equivalence Principle with the STE-QUEST space mission" , Adv. Space Res. 55 501-524. |
Abstract: We present in detail the scientific objectives in fundamental physics of the Space Time Explorer and QUantum Equivalence Space Test (STE-QUEST) space mission. STE-QUEST was pre-selected by the European Space Agency together with four other missions for the cosmic vision M3 launch opportunity planned around 2024. It carries out tests of different aspects of the Einstein Equivalence Principle using atomic clocks, matter wave interferometry and long distance time/frequency links, providing fascinating science at the interface between quantum mechanics and gravitation that cannot be achieved, at that level of precision, in ground experiments. We especially emphasize the specific strong interest of performing Equivalence Principle tests in the quantum regime, i.e. using quantum atomic wave interferometry. Although STE-QUEST was finally not selected in early 2014 because of budgetary and technological reasons, its science case was very highly rated. Our aim is to expose that science to a large audience in order to allow future projects and proposals to take advantage of the STE-QUEST experience. (C) 2014 COSPAR. Published by Elsevier Ltd. All rights reserved. |
BibTeX:
@article{Altschul2015, author = {Altschul, Brett and Bailey, Quentin G. and Blanchet, Luc and Bongs, Kai and Bouyer, Philippe and Cacciapuoti, Luigi and Capozziello, Salvatore |
2015 A Canaguier-Durand, C Genet, A Lambrecht, TW Ebbesen and S Reynaud "Non-Markovian polariton dynamics in organic strong coupling" , Eur. Phys. J. D 69 24 |
Abstract: Strongly coupled organic systems are characterized by unusually large Rabi splitting, even in the vacuum state. They show the counter-intuitive feature of a lifetime of the lower polariton state longer than for all other excited states. Here we build up a new theoretical framework to understand the dynamics of such coupled system. In particular, we show that the non-Markovian character of the relaxation of the dressed organic system explains the long lifetime of the lower polariton state. |
BibTeX:
@article{Canaguier-Durand2015, author = {Canaguier-Durand, Antoine and Genet, Cyriaque and Lambrecht, Astrid and Ebbesen, Thomas W. and Reynaud, Serge}, title = {Non-Markovian polariton dynamics in organic strong coupling}, journal = {EUROPEAN PHYSICAL JOURNAL D}, journal = {Eur. Phys. J. D}, year = {2015}, volume = {69}, number = {1}, article-number = {24}, doi = {10.1140/epjd/e2014-50539-x}, unique-id = {ISI:000361130700002} } |
2015 N Cherroret, R Guerout, A Lambrecht and S Reynaud "Statistical approach to Casimir-Polder potentials in heterogeneous media" , Phys. Rev. A 92 042513 |
Abstract: We explore the statistical properties of the Casimir-Polder potential between a dielectric sphere and a three-dimensional heterogeneous medium, by means of extensive numerical simulations based on the scattering theory of Casimir forces. The simulations allow us to confirm recent predictions for the mean and standard deviation of the Casimir potential, and give us access to its full distribution function in the limit of a dilute distribution of heterogeneities. These predictions are compared with a simple statistical model based on a pairwise summation of the individual contributions of the constituting elements of the medium. |
BibTeX:
@article{Cherroret2015, author = {Cherroret, Nicolas and Guerout, Romain and Lambrecht, Astrid and Reynaud, Serge}, title = {Statistical approach to Casimir-Polder potentials in heterogeneous media}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2015}, volume = {92}, number = {4}, article-number = {042513}, doi = {10.1103/PhysRevA.92.042513}, unique-id = {ISI:000363509700003} } |
2015 N Cherroret, R Guerout, A Lambrecht and S Reynaud "Fluctuations of the Casimir potential above a disordered medium" , Eur. Phys. J. C 69 99 |
Abstract: We develop a general approach to study the statistical fluctuations of the Casimir potential felt by an atom approaching a dielectric disordered medium. Starting from a microscopic model for the disorder, we calculate the variance of potential fluctuations in the limit of a weak density of heterogeneities. We show that fluctuations are essentially governed by scattering of the radiation on a single heterogeneity, and that they become larger than the average value predicted by effective medium theory at short distances. Finally, for denser disorder we show that multiple scattering processes become relevant. |
BibTeX:
@article{Cherroret2015a, author = {Cherroret, Nicolas and Guerout, Romain and Lambrecht, Astrid and Reynaud, Serge}, title = {Fluctuations of the Casimir potential above a disordered medium}, journal = {EUROPEAN PHYSICAL JOURNAL D}, journal = {Eur. Phys. J. C}, year = {2015}, volume = {69}, number = {4}, article-number = {99}, doi = {10.1140/epjd/e2015-50898-8}, unique-id = {ISI:000361131400003} } |
2015 M Donaire and A Lambrecht "Coherent effect of vacuum fluctuations on driven atoms" , Phys. Rev. A 92 013838 |
Abstract: We study the coherent effect of the Casimir-Polder interaction on the oscillations of two-photon driven atoms. We find that, for oscillations between two degenerate states in Lambda configuration, shifts on the Rabi frequency may be induced by nonadditive level shifts. For oscillations between two Rydberg states in ladder configuration, shifts on the Rabi frequency may be induced by the effective renormalization of the laser interaction. |
BibTeX:
@article{Donaire2015, author = {Donaire, M. and Lambrecht, A.}, title = {Coherent effect of vacuum fluctuations on driven atoms}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2015}, volume = {92}, number = {1}, article-number = {013838}, doi = {10.1103/PhysRevA.92.013838}, unique-id = {ISI:000358371000009} } |
2015 M Donaire, MP Gorza, A Maury, R Guerout and A Lambrecht "Casimir-Polder induced Rabi oscillations" , EPL 109 24003 |
Abstract: We show that the Casimir-Polder interaction may induce coherent oscillations between degenerate atomic states. We illustrate this effect by computing the Casimir-Polder-induced Rabi frequency on a Rb-87 atom as it interacts with a reflecting surface. The atom oscillates between two Zeeman sublevels of its ground state undergoing a periodic exchange of angular momentum with the vacuum photons. Copyright (C) EPLA, 2015 |
BibTeX:
@article{Donaire2015a, author = {Donaire, M. and Gorza, M. -P. and Maury, A. and Guerout, R. and Lambrecht, A.}, title = {Casimir-Polder induced Rabi oscillations}, journal = {EPL}, journal = {EPL}, year = {2015}, volume = {109}, number = {2}, article-number = {24003}, doi = {10.1209/0295-5075/109/24003}, unique-id = {ISI:000349555100013} } |
2015 M Donaire, R Guerout and A Lambrecht "Quasiresonant van der Waals Interaction between Nonidentical Atoms" , Phys. Rev. Lett. 115 033201 |
Abstract: We present a time-dependent quantum calculation of the van der Waals interaction between a pair of dissimilar atoms, one of which is initially excited while the other one is in its ground state. For small detuning, the interaction is predominantly mediated at all distances by the exchange of doubly resonant photons between the two atoms. We find that it presents both temporal and spatial oscillations. Spatially oscillating terms depend on the resonant frequencies of both atoms, while the frequency of the time oscillations is given by their detuning. We analyze the physical content of our findings and discuss to what extent previous conflicting stationary approaches provide compatible results. A proper account of causality is found essential in order to obtain the correct result. |
BibTeX:
@article{Donaire2015b, author = {Donaire, M. and Guerout, R. and Lambrecht, A.}, title = {Quasiresonant van der Waals Interaction between Nonidentical Atoms}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2015}, volume = {115}, number = {3}, article-number = {033201}, doi = {10.1103/PhysRevLett.115.033201}, unique-id = {ISI:000358024500003} } |
2015 M Donaire, BA van Tiggelen and GLJA Rikken "Transfer of linear momentum from the quantum vacuum to a magnetochiral molecule" , J. Phys. Condens. Matt. 27 214002 |
Abstract: In a recent publication [1] we have shown using a QED approach that, in the presence of a magnetic field, the quantum vacuum coupled to a chiral molecule provides a kinetic momentum directed along the magnetic field. Here we explain the physical mechanisms which operate in the transfer of momentum from the vacuum to the molecule. We show that the variation of the molecular kinetic energy originates from the magnetic energy associated with the vacuum correction to the magnetization of the molecule. We carry out a semiclassical calculation of the vacuum momentum and compare the result with the QED calculation. |
BibTeX:
@article{Donaire2015d, author = {Donaire, M. and van Tiggelen, B. A. and Rikken, G. L. J. A.}, title = {Transfer of linear momentum from the quantum vacuum to a magnetochiral molecule}, journal = {JOURNAL OF PHYSICS-CONDENSED MATTER}, journal = {J. Phys. Condens. Matt.}, year = {2015}, volume = {27}, number = {21, SI}, article-number = {214002}, doi = {10.1088/0953-8984/27/21/214002}, unique-id = {ISI:000354390300003} } |
2015 G Dufour, DB Cassidy, P Crivelli, P Debu, A Lambrecht, VV Nesvizhevsky, S Reynaud, AY Voronin and TE Wall "Prospects for Studies of the Free Fall and Gravitational Quantum States of Antimatter" , Adv. High Energy Phys. 2015 379642 |
Abstract: Different experiments are ongoing to measure the effect of gravity on cold neutral antimatter atoms such as positronium, muonium, and antihydrogen. Among those, the project GBAR at CERN aims to measure precisely the gravitational fall of ultracold antihydrogen atoms. In the ultracold regime, the interaction of antihydrogen atoms with a surface is governed by the phenomenon of quantum reflection which results in bouncing of antihydrogen atoms on matter surfaces. This allows the application of a filtering scheme to increase the precision of the free fall measurement. In the ultimate limit of smallest vertical velocities, antihydrogen atoms are settled in gravitational quantum states in close analogy to ultracold neutrons (UCNs). Positronium is another neutral system involving antimatter for which free fall under gravity is currently being investigated at UCL. Building on the experimental techniques under development for the free fall measurement, gravitational quantum states could also be observed in positronium. In this contribution, we report on the status of the ongoing experiments and discuss the prospects of observing gravitational quantum states of antimatter and their implications. |
BibTeX:
@article{Dufour2015, author = {Dufour, G. and Cassidy, D. B. and Crivelli, P. and Debu, P. and Lambrecht, A. and Nesvizhevsky, V. V. and Reynaud, S. and Voronin, A. Yu. and Wall, T. E.}, title = {Prospects for Studies of the Free Fall and Gravitational Quantum States of Antimatter}, journal = {ADVANCES IN HIGH ENERGY PHYSICS}, journal = {Adv. High Energy Phys.}, year = {2015}, volume = {2015}, article-number = {379642}, doi = {10.1155/2015/379642}, unique-id = {ISI:000351610000001} } |
2015 G Dufour, R Guerout, A Lambrecht and S Reynaud "Quantum reflection and Liouville transformations from wells to walls" , EPL 110 30007 |
Abstract: Liouville transformations map in a rigorous manner one Schrodinger equation into another, with a changed scattering potential. They are used here to transform quantum reflection of an atom on an attractive Casimir-Polder well into reflection of the atom on a repulsive wall. While the scattering properties are preserved, the corresponding semiclassical descriptions are completely different. A quantitative evaluation of quantum reflection probabilities is deduced from this method. Copyright (C) EPLA, 2015 |
BibTeX:
@article{Dufour2015a, author = {Dufour, G. and Guerout, R. and Lambrecht, A. and Reynaud, S.}, title = {Quantum reflection and Liouville transformations from wells to walls}, journal = {EPL}, journal = {EPL}, year = {2015}, volume = {110}, number = {3}, article-number = {30007}, doi = {10.1209/0295-5075/110/30007}, unique-id = {ISI:000356609500007} } |
2015 G Dufour, R Guerout, A Lambrecht and S Reynaud "Liouville transformations and quantum reflection" , J. Phys. B 48 155002 |
Abstract: Liouville transformations of Schrodinger equations preserve the scattering amplitudes while changing the effective potential. We discuss the properties of these gauge transformations and introduce a special Liouville gauge which allows one to map the problem of quantum reflection of an atom on an attractive Casimir-Polder well into that of reflection on a repulsive wall. We deduce a quantitative evaluation of quantum reflection probabilities in terms of the universal probability which corresponds to the solution of the V-4 = -C-4/z(4) far-end Casimir-Polder potential. |
BibTeX:
@article{Dufour2015b, author = {Dufour, G. and Guerout, R. and Lambrecht, A. and Reynaud, S.}, title = {Liouville transformations and quantum reflection}, journal = {JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS}, journal = {J. Phys. B}, year = {2015}, volume = {48}, number = {15, SI}, article-number = {155002}, doi = {10.1088/0953-4075/48/15/155002}, unique-id = {ISI:000358584200003} } |
2015 R Guerout, C Genet, A Lambrecht and S Reynaud "Casimir torque between nanostructured plates" , EPL 111 44001 |
Abstract: We investigate in detail the Casimir torque induced by quantum vacuum fluctuations between two nanostructured plates. Our calculations are based on the scattering approach and take into account the coupling between different modes induced by the shape of the surface which are neglected in any sort of proximity approximation or effective medium approach. We then present an experimental setup aiming at measuring this torque. |
BibTeX:
@article{Guerout2015, author = {Guerout, R. and Genet, C. and Lambrecht, A. and Reynaud, S.}, title = {Casimir torque between nanostructured plates}, journal = {EPL}, journal = {EPL}, year = {2015}, volume = {111}, number = {4}, article-number = {44001}, doi = {10.1209/0295-5075/111/44001}, unique-id = {ISI:000362357500016} } |
2015 G-L Ingold and A Lambrecht "Casimir effect from a scattering approach" , Am. J. Phys. 83 156-162. |
Abstract: The Casimir force is a spectacular consequence of the existence of vacuum fluctuations and thus deserves a place in courses on quantum theory. We argue that the scattering approach within a one-dimensional field theory is well suited to a discussion of the Casimir effect. It avoids in a transparent way divergences appearing in the evaluation of the vacuum energy. Furthermore, the scattering approach connects in a natural manner to the standard discussion of one-dimensional scattering problems in a quantum theory course. Finally, it allows for the introduction to students of the methods employed in the current research literature to determine the Casimir force in real-world systems. (C) 2015 American Association of Physics Teachers. |
BibTeX:
@article{Ingold2015, author = {Ingold, Gert-Ludwig and Lambrecht, Astrid}, title = {Casimir effect from a scattering approach}, journal = {AMERICAN JOURNAL OF PHYSICS}, journal = {Am. J. Phys.}, year = {2015}, volume = {83}, number = {2}, pages = {156-162}, doi = {10.1119/1.4896197}, unique-id = {ISI:000348377000009} } |
2015 G-L Ingold, S Umrath, M Hartmann, R Guerout, A Lambrecht, S Reynaud and KA Milton "Geometric origin of negative Casimir entropies: A scattering-channel analysis" , Phys. Rev. E 91 033203 |
Abstract: Negative values of the Casimir entropy occur quite frequently at low temperatures in arrangements of metallic objects. The physical reason lies either in the dissipative nature of the metals as is the case for the plane-plane geometry or in the geometric form of the objects involved. Examples for the latter are the sphere-plane and the sphere-sphere geometry, where negative Casimir entropies can occur already for perfect metal objects. After appropriately scaling out the size of the objects, negative Casimir entropies of geometric origin are particularly pronounced in the limit of large distances between the objects. We analyze this limit in terms of the different scattering channels and demonstrate how the negativity of the Casimir entropy is related to the polarization mixing arising in the scattering process. If all involved objects have a finite zero-frequency conductivity, the channels involving transverse electric modes are suppressed and the Casimir entropy within the large-distance limit is found to be positive. |
BibTeX:
@article{Ingold2015a, author = {Ingold, Gert-Ludwig and Umrath, Stefan and Hartmann, Michael and Guerout, Romain and Lambrecht, Astrid and Reynaud, Serge and Milton, Kimball A.}, title = {Geometric origin of negative Casimir entropies: A scattering-channel analysis}, journal = {PHYSICAL REVIEW E}, journal = {Phys. Rev. E}, year = {2015}, volume = {91}, number = {3}, article-number = {033203}, doi = {10.1103/PhysRevE.91.033203}, unique-id = {ISI:000350966600016} } |
2015 KA Milton, R Guerout, G-L Ingold, A Lambrecht and S Reynaud "Negative Casimir entropies in nanoparticle interactions" , J. Phys. Condens. Matt. 27 214003 |
Abstract: Negative entropy has been known in Casimir systems for some time. For example, it can occur between parallel metallic plates modeled by a realistic Drude permittivity. Less well known is that negative entropy can occur purely geometrically, say between a perfectly conducting sphere and a conducting plate. The latter effect is most pronounced in the dipole approximation, which is reliable when the size of the sphere is small compared to the separation between the sphere and the plate. Therefore, here we examine cases where negative entropy can occur between two electrically and magnetically polarizable nanoparticles or atoms, which need not be isotropic, and between such a small object and a conducting plate. Negative entropy can occur even between two perfectly conducting spheres, between two electrically polarizable nanoparticles if there is sufficient anisotropy, between a perfectly conducting sphere and a Drude sphere, and between a sufficiently anisotropic electrically polarizable nanoparticle and a transverse magnetic conducting plate. |
BibTeX:
@article{Milton2015, author = {Milton, Kimball A. and Guerout, Romain and Ingold, Gert-Ludwig and Lambrecht, Astrid and Reynaud, Serge}, title = {Negative Casimir entropies in nanoparticle interactions}, journal = {JOURNAL OF PHYSICS-CONDENSED MATTER}, journal = {J. Phys. Condens. Matt.}, year = {2015}, volume = {27}, number = {21, SI}, article-number = {214003}, doi = {10.1088/0953-8984/27/21/214003}, unique-id = {ISI:000354390300004} } |
2015 G Palasantzas, DAR Dalvit, R Decca, VB Svetovoy and A Lambrecht "Casimir Physics Preface" , J. Phys. Condens. Matt. 27 210301 |
BibTeX:
@article{Palasantzas2015, author = {Palasantzas, George and Dalvit, Diego A. R. and Decca, Ricardo and Svetovoy, Vitaly B. and Lambrecht, Astrid}, title = {Casimir Physics Preface}, journal = {JOURNAL OF PHYSICS-CONDENSED MATTER}, journal = {J. Phys. Condens. Matt.}, year = {2015}, volume = {27}, number = {21, SI}, article-number = {210301}, doi = {10.1088/0953-8984/27/21/210301}, unique-id = {ISI:000354390300001} } |
2015 P Perez, D Banerjee, F Biraben, D Brook-Roberge, M Charlton, P Clade, P Comini, P Crivelli, O Dalkarov, P Debu, A Douillet, G Dufour, P Dupre, S Eriksson, P Froelich, P Grandemange, S Guellati, R Guerout, JM Heinrich, PA Hervieux, L Hilico, A Husson, P Indelicato, S Jonsell, JP Karr, K Khabarova, N Kolachevsky, N Kuroda, A Lambrecht, AMM Leite, L Liszkay, D Lunney, N Madsen, G Manfredi, B Mansoulie, Y Matsuda, A Mohri, T Mortensen, Y Nagashima, V Nesvizhevsky, F Nez, C Regenfus, JM Rey, JM Reymond, S Reynaud, A Rubbia, Y Sacquin, F Schmidt-Kaler, N Sillitoe, M Staszczak, CI Szabo-Foster, H Torii, B Vallage, M Valdes, DP Van der Werf, A Voronin, J Walz, S Wolf, S Wronka and Y Yamazaki "The GBAR antimatter gravity experiment" , Hyperfine Interactions 233 21-27. |
Abstract: The GBAR project (Gravitational Behaviour of Anti hydrogen at Rest) at CERN, aims to measure the free fall acceleration of ultracold neutral anti hydrogen atoms in the terrestrial gravitational field. The experiment consists preparing anti hydrogen ions (one antiproton and two positrons) and sympathetically cooling them with Be (+) ions to less than 10 mu K. The ultracold ions will then be photo-ionized just above threshold, and the free fall time over a known distance measured. We will describe the project, the accuracy that can be reached by standard techniques, and discuss a possible improvement to reduce the vertical velocity spread. |
BibTeX:
@article{Perez2015, author = {Perez, P. and Banerjee, D. and Biraben, F. and Brook-Roberge, D. and |
2014 CS Arridge, N Achilleos, J Agarwal, CB Agnor, R Ambrosi, N Andre, SV Badman, K Baines, D Banfield, M Barthelemy, MM Bisi, J Blum, T Bocanegra-Bahamon, B Bonfond, C Bracken, P Brandt, C Briand, C Briois, S Brooks, J Castillo-Rogez, T Cavalie, B Christophe, AJ Coates, G Collinson, JF Cooper, M Costa-Sitja, R Courtin, IA Daglis, I De Pater, M Desai, D Dirkx, MK Dougherty, RW Ebert, G Filacchione, LN Fletcher, J Fortney, I Gerth, D Grassi, D Grodent, E Grun, J Gustin, M Hedman, R Helled, P Henri, S Hess, JK Hillier, MH Hofstadter, R Holme, M Horanyi, G Hospodarsky, S Hsu, P Irwin, CM Jackman, O Karatekin, S Kempf, E Khalisi, K Konstantinidis, H Kruger, WS Kurth, C Labrianidis, V Lainey, LL Lamy, M Laneuville, D Lucchesi, A Luntzer, J MacArthur, A Maier, A Masters, S McKenna-Lawlor, H Melin, A Milillo, G Moragas-Klostermeyer, A Morschhauser, JI Moses, O Mousis, N Nettelmann, FM Neubauer, T Nordheim, B Noyelles, GS Orton, M Owens, R Peron, C Plainaki, F Postberg, N Rambaux, K Retherford, S Reynaud, E Roussos, CT Russell, A Rymer, R Sallantin, A Sanchez-Lavega, O Santolik, J Saur, K Sayanagi, P Schenk, J Schubert, N Sergis, EC Sittler, A Smith, F Spahn, R Srama, T Stallard, V Sterken, Z Sternovsky, M Tiscareno, G Tobie, F Tosi, M Trieloff, D Turrini, EP Turtle, S Vinatier, R Wilson and P Zarkat "The science case for an orbital mission to Uranus: Exploring the origins and evolution of ice giant planets" , Planet Space Sci. 104 122-140. |
Abstract: Giant planets helped to shape the conditions we see in the Solar System today and they account for more than 99% of the mass of the Sun's planetary system. They can be subdivided into the Ice Giants (Uranus and Neptune) and the Gas Giants (Jupiter and Saturn), which differ from each other in a number of fundamental ways. Uranus, in particular is the most challenging to our understanding of planetary formation and evolution, with its large obliquity, low self-luminosity, highly asymmetrical internal field, and puzzling internal structure. Uranus also has a rich planetary system consisting of a system of inner natural satellites and complex ring system, five major natural icy satellites, a system of irregular moons with varied dynamical histories, and a highly asymmetrical magnetosphere. Voyager 2 is the only spacecraft to have explored Uranus, with a flyby in 1986, and no mission is currently planned to this enigmatic system. However, a mission to the uranian system would open a new window on the origin and evolution of the Solar System and would provide crucial information on a wide variety of physicochemical processes in our Solar System. These have clear implications for understanding exoplanetary systems. In this paper we describe the science case for an orbital mission to Uranus with an atmospheric entry probe to sample the composition and atmospheric physics in Uranus' atmosphere. The characteristics of such an orbiter and a strawman scientific payload are described and we discuss the technical challenges for such a mission. This paper is based on a white paper submitted to the European Space Agency's call for science themes for its large-class mission programme in 2013. (C) 2014 Published by Elsevier Ltd. |
BibTeX:
@article{Arridge2014, author = {Arridge, C. S. and Achilleos, N. and Agarwal, J. and Agnor, C. B. and Ambrosi, R. and Andre, N. and Badman, S. V. and Baines, K. and Banfield, D. and Barthelemy, M. and Bisi, M. M. and Blum, J. and Bocanegra-Bahamon, T. and Bonfond, B. . and Bracken, C. and Brandt, P. and Briand, C. and Briois, C. and Brooks, S. and Castillo-Rogez, J. and Cavalie, T. and Christophe, B. and Coates, A. J. and Collinson, G. and Cooper, J. F. and Costa-Sitja, M. and Courtin, R. and Daglis, I. A. and De Pater, I. and Desai, M. and Dirkx, D. and Dougherty, M. K. and Ebert, R. W. and Filacchione, G. and Fletcher, L. N. and Fortney, J. and Gerth, I. and Grassi, D. and Grodent, D. and Grun, E. and Gustin, J. and Hedman, M. and Helled, R. and Henri, P. and Hess, S. and Hillier, J. K. and Hofstadter, M. H. and Holme, R. and Horanyi, M. and Hospodarsky, G. and Hsu, S. and Irwin, P. and Jackman, C. M. and Karatekin, O. and Kempf, S. and Khalisi, E. and Konstantinidis, K. and Kruger, H. and Kurth, W. S. and Labrianidis, C. and Lainey, V. and Lamy, L. L. and Laneuville, M. and Lucchesi, D. and Luntzer, A. and MacArthur, J. and Maier, A. and Masters, A. and McKenna-Lawlor, S. and Melin, H. and Milillo, A. and Moragas-Klostermeyer, G. and Morschhauser, A. and Moses, J. I. and Mousis, O. and Nettelmann, N. and Neubauer, F. M. and Nordheim, T. and Noyelles, B. and Orton, G. S. and Owens, M. and Peron, R. and Plainaki, C. and Postberg, F. and Rambaux, N. and Retherford, K. and Reynaud, S. and Roussos, E. and Russell, C. T. and Rymer, Am. and Sallantin, R. and Sanchez-Lavega, A. and Santolik, O. and Saur, J. and Sayanagi, Km. and Schenk, P. and Schubert, J. and Sergis, N. and Sittler, E. C. and Smith, A. and Spahn, F. and Srama, R. and Stallard, T. and Sterken, V. and Sternovsky, Z. and Tiscareno, M. and Tobie, G. and Tosi, F. and Trieloff, M. and Turrini, D. and Turtle, E. P. and Vinatier, S. and Wilson, R. and Zarkat, P.}, title = {The science case for an orbital mission to Uranus: Exploring the origins and evolution of ice giant planets}, journal = {PLANETARY AND SPACE SCIENCE}, journal = {Planet Space Sci.}, year = {2014}, volume = {104}, number = {A, SI}, pages = {122-140}, doi = {10.1016/j.pss.2014.08.009}, language = {English}, unique-id = {ISI:000347585400010}, web-of-science-categories = {Astronomy & Astrophysics} } |
2014 RO Behunin, DAR Dalvit, RS Decca, C Genet, IW Jung, A Lambrecht, A Liscio, D Lopez, S Reynaud, G Schnoering, G Voisin and Y Zeng "Kelvin probe force microscopy of metallic surfaces used in Casimir force measurements" , Phys. Rev. A 90 062115 |
Abstract: Kelvin probe force microscopy at normal pressure was performed by two different groups on the same Au-coated planar sample used to measure the Casimir interaction in a sphere-plane geometry. The obtained voltage distribution was used to calculate the separation dependence of the electrostatic pressure P-res(D) in the configuration of the Casimir experiments. In the calculation it was assumed that the potential distribution in the sphere has the same statistical properties as the measured one, and that there are no correlation effects on the potential distributions due to the presence of the other surface. The result of this calculation, using the currently available knowledge, is that P-res(D) does not explain the magnitude or the separation dependence of the difference Delta P(D) between the measured Casimir pressure and the one calculated using a Drude model for the electromagnetic response of Au. We discuss in the conclusions the points which have to be checked out by future work, including the influence of pressure and a more accurate determination of the patch distribution, in order to confirm these results. |
BibTeX:
@article{Behunin2014, author = {Behunin, R. O. and Dalvit, D. A. R. and Decca, R. S. and Genet, C. and Jung, I. W. and Lambrecht, A. and Liscio, A. and Lopez, D. and Reynaud, S. and Schnoering, G. and Voisin, G. and Zeng, Y.}, title = {Kelvin probe force microscopy of metallic surfaces used in Casimir force measurements}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2014}, volume = {90}, number = {6}, article-number = {062115}, doi = {10.1103/PhysRevA.90.062115}, language = {English}, unique-id = {ISI:000346373300001}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2014 G Dufour, P Debu, A Lambrecht, VV Nesvizhevsky, S Reynaud and AY Voronin "Shaping the distribution of vertical velocities of antihydrogen in GBAR" , Eur. Phys. J. C 74 2731 |
Abstract: GBAR is a project aiming at measuring the free-fall acceleration of gravity for antimatter, namely antihydrogen atoms ((H) over bar). The precision of this timing experiment depends crucially on the dispersion of initial vertical velocities of the atoms as well as on the reliable control of their distribution. We propose to use a new method for shaping the distribution of the vertical velocities of (H) over bar, which improves these factors simultaneously. The method is based on quantum reflection of elastically and specularly bouncing (H) over bar with small initial vertical velocity on a bottom mirror disk, and absorption of atoms with large initial vertical velocities on a top rough disk. We estimate statistical and systematic uncertainties, and we show that the accuracy for measuring the free fall acceleration (g) over bar of (H) over bar could be pushed below 10(-3) under realistic experimental conditions. |
BibTeX:
@article{Dufour2014, author = {Dufour, G. and Debu, P. and Lambrecht, A. and Nesvizhevsky, V. V. and Reynaud, S. and Voronin, A. Yu}, title = {Shaping the distribution of vertical velocities of antihydrogen in GBAR}, journal = {EUROPEAN PHYSICAL JOURNAL C}, journal = {Eur. Phys. J. C}, year = {2014}, volume = {74}, number = {1}, article-number = {2731}, doi = {10.1140/epjc/s10052-014-2731-8}, language = {English}, unique-id = {ISI:000330989400001}, web-of-science-categories = {Physics, Particles & Fields} } |
2014 R Guerout, A Lambrecht, KA Milton and S Reynaud "Derivation of the Lifshitz-Matsubara sum formula for the Casimir pressure between metallic plane mirrors" , Phys. Rev. E 90 042125 |
Abstract: We carefully reexamine the conditions of validity for the consistent derivation of the Lifshitz-Matsubara sum formula for the Casimir pressure between metallic plane mirrors. We recover the usual expression for the lossy Drude model but not for the lossless plasma model. We give an interpretation of this new result in terms of the modes associated with the Foucault currents, which play a role in the limit of vanishing losses, in contrast to common expectations. |
BibTeX:
@article{Guerout2014, author = {Guerout, R. and Lambrecht, A. and Milton, K. A. and Reynaud, S.}, title = {Derivation of the Lifshitz-Matsubara sum formula for the Casimir pressure between metallic plane mirrors}, journal = {PHYSICAL REVIEW E}, journal = {Phys. Rev. E}, year = {2014}, volume = {90}, number = {4}, article-number = {042125}, doi = {10.1103/PhysRevE.90.042125}, language = {English}, unique-id = {ISI:000344030300003}, web-of-science-categories = {Physics, Fluids & Plasmas; Physics, Mathematical} } |
2014 P Indelicato, G Chardin, P Grandemange, D Lunney, V Manea, A Badertscher, P Crivelli, A Curioni, A Marchionni, B Rossi, A Rubbia, V Nesvizhevsky, D Brook-Roberge, P Comini, P Debu, P Dupre, L Liszkay, B Mansoulie, P Perez, J-M Rey, B Reymond, N Ruiz, Y Sacquin, B Vallage, F Biraben, P Clade, A Douillet, G Dufour, S Guellati, L Hilico, A Lambrecht, R Guerout, J-P Karr, F Nez, S Reynaud, CI Szabo, V-Q Tran, J Trapateau, A Mohri, Y Yamazaki, M Charlton, S Eriksson, N Madsen, DP van der Werf, N Kuroda, H Torii, Y Nagashima, F Schmidt-Kaler, J Walz, S Wolf, P-A Hervieux, G Manfredi, A Voronin, P Froelich, S Wronka and M Staszczak "The GBAR project, or how does antimatter fall?" , Hyperfine Interactions 228 141-150. |
Abstract: The Einstein classical Weak Equivalence Principle states that the trajectory of a particle is independent of its composition and internal structure when it is only submitted to gravitational forces. This fundamental principle has never been directly tested with antimatter. However, theoretical models such as supergravity may contain components inducing repulsive gravity, thus violating this principle. The GBAR project (Gravitational Behaviour of Antihydrogen at Rest) proposes to measure the free fall acceleration of ultracold neutral antihydrogen atoms in the terrestrial gravitational field. The experiment consists in preparing antihydrogen ions (one antiproton and two positrons) and sympathetically cool them with Be+ ions to a few 10 mu K. The ultracold ions will then be photoionized just above threshold, and the free-fall time over a known distance measured. In this work, the GBAR project is described as well as possible improvements that use quantum reflection of antihydrogen on surfaces to use quantum methods of measurements. |
BibTeX:
@article{Indelicato2014, author = {Indelicato, Paul and Chardin, G. and Grandemange, P. and Lunney, D. and |
2014 A Masters, N Achilleos, CB Agnor, S Campagnola, S Charnoz, B Christophe, AJ Coates, LN Fletcher, GH Jones, L Lamy, F Marzari, N Nettelmann, J Ruiz, R Ambrosi, N Andre, A Bhardwaj, J Fortney, CJ Hansen, R Helled, G Moragas-Klostermeyer, G Orton, L Ray, S Reynaud, N Sergis, R Srama and M Volwerk "Neptune and Triton: Essential pieces of the Solar System puzzle" , Planet Space Sci. 104 108-121. |
Abstract: The planet Neptune and its largest moon Triton hold the keys to major advances across multiple fields of Solar System science. The ice giant Neptune played a unique and important role in the process of Solar System formation, has the most meteorologically active atmosphere in the Solar System (despite its great distance from the Sun), and may be the best Solar System analogue of the dominant class of exoplanets detected to date. Neptune's moon Triton is very likely a captured Kuiper Belt object, holding the answers to questions about the icy dwarf planets that formed in the outer Solar System. Triton is geologically active, has a tenuous nitrogen atmosphere, and is predicted to have a subsurface ocean. However, our exploration of the Neptune system remains limited to a single spacecraft flyby, made by Voyager 2 in 1989. Here, we present the high-level science case for further exploration of this outermost planetary system, based on a white paper submitted to the European Space Agency (ESA) for the definition of the second and third large missions in the ESA Cosmic Vision Programme 2015-2025. We discuss all the major science themes that are relevant for further spacecraft exploration of the Neptune system, and identify key scientific questions in each area. We present an overview of the results of a European-led Neptune orbiter mission analysis. Such a mission has significant scope for international collaboration, and is essential to achieve our aim of understanding how the Solar System formed, and how it works today. (C) 2014 Elsevier Ltd. All rights reserved. |
BibTeX:
@article{Masters2014, author = {Masters, A. and Achilleos, N. and Agnor, C. B. and Campagnola, S. and Charnoz, S. and Christophe, B. and Coates, A. J. and Fletcher, L. N. and Jones, G. H. and Lamy, L. and Marzari, F. and Nettelmann, N. and Ruiz, J. and Ambrosi, R. and Andre, N. and Bhardwaj, A. and Fortney, Jj. and Hansen, C. J. and Helled, R. and Moragas-Klostermeyer, G. and Orton, G. and Ray, L. and Reynaud, S. and Sergis, N. and Srama, R. and Volwerk, M.}, title = {Neptune and Triton: Essential pieces of the Solar System puzzle}, journal = {PLANETARY AND SPACE SCIENCE}, journal = {Planet Space Sci.}, year = {2014}, volume = {104}, number = {A, SI}, pages = {108-121}, doi = {10.1016/j.pss.2014.05.008}, language = {English}, unique-id = {ISI:000347585400009}, web-of-science-categories = {Astronomy & Astrophysics} } |
2014 KA Milton "Schwinger's approach to Einstein's gravity and beyond" , Can. J. Phys. 92 964-967. |
Abstract: J. Schwinger (1918-1994), founder of renormalized quantum electrodynamics, was arguably the leading theoretical physicist of the second half of the 20th century. Thus it is not surprising that he made contributions to gravity theory as well. His students made major impacts on the still uncompleted program of constructing a quantum theory of gravity. Schwinger himself had no doubt of the validity of general relativity, although he preferred a particle physics viewpoint based on gravitons and the associated fields, and not the geometrical picture of curved space-time. This article provides a brief summary of his contributions and attitudes toward the subject of gravity. |
BibTeX:
@article{Milton2014, author = {Milton, K. A.}, title = {Schwinger's approach to Einstein's gravity and beyond}, journal = {CANADIAN JOURNAL OF PHYSICS}, journal = {Can. J. Phys.}, year = {2014}, volume = {92}, number = {9}, pages = {964-967}, doi = {10.1139/cjp-2013-0739}, language = {English}, unique-id = {ISI:000341723900005}, web-of-science-categories = {Physics, Multidisciplinary} } |
2014 KA Milton, KV Shajesh, SA Fulling and P Parashar "How does Casimir energy fall? IV. Gravitational interaction of regularized quantum vacuum energy" , Phys. Rev. D 89 064027 |
Abstract: Several years ago we demonstrated that the Casimir energy for perfectly reflecting and imperfectly reflecting parallel plates gravitated normally, that is, obeyed the equivalence principle. At that time the divergences in the theory were treated only formally, without proper regularization, and the coupling to gravity was limited to the canonical energy-momentum-stress tensor. Here we strengthen the result by removing both of those limitations. We consider, as a toy model, massless scalar fields interacting with semitransparent (delta-function) potentials defining parallel plates, which become Dirichlet plates for strong coupling. We insert space and time point-split regulation parameters, and obtain well-defined contributions to the self-energy of each plate, and the interaction energy between the plates. (This self-energy does not vanish even in the conformally coupled, strong-coupled limit.) We also compute the local energy density, which requires regularization near the plates. In general, the energy density includes a surface energy that resides precisely on the boundaries. This energy is also regulated. The gravitational interaction of this well-defined system is then investigated, and it is verified that the equivalence principle is satisfied. |
BibTeX:
@article{Milton2014a, author = {Milton, K. A. and Shajesh, K. V. and Fulling, S. A. and Parashar, Prachi}, title = {How does Casimir energy fall? IV. Gravitational interaction of regularized quantum vacuum energy}, journal = {PHYSICAL REVIEW D}, journal = {Phys. Rev. D}, year = {2014}, volume = {89}, number = {6}, article-number = {064027}, doi = {10.1103/PhysRevD.89.064027}, language = {English}, unique-id = {ISI:000333108200004}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Particles & Fields} } |
2014 PS Zuchowski, R Guerout and O Dulieu "Ground- and excited-state properties of the polar and paramagnetic RbSr molecule: A comparative study" , Phys. Rev. A 90 012507 |
Abstract: This paper deals with the electronic structure of RbSr, a molecule possessing both a magnetic dipole moment and an electric dipole moment in its own frame, allowing its manipulation with external fields. Two complementary ab initio approaches are used for the ground and lowest excited states: first, an approach relying on optimized effective core potentials with core polarization potentials based on a full configuration interaction involving three valence electrons and second, an approach using a small-size effective core potential with 19 correlated electrons in the framework of coupled-cluster theory. We have found excellent agreement between these two approaches for the ground-state properties including the permanent dipole moment. We have focused on studies of excited states correlated to the two lowest asymptotes Rb(5p P-2)+ Sr(5s(2) S-1) and Rb(5s S-2)+ Sr(5s5p P-3) relevant for ongoing experiments on ultracold quantum degenerate gases. We also present approximate potential curves including spin-orbit interaction based on atomic spin-orbit constants. These potential curves are an excellent starting point for experimental studies of molecular structure of RbSr using high-resolution spectroscopy. |
BibTeX:
@article{Zuchowski2014, author = {Zuchowski, Piotr S. and Guerout, R. and Dulieu, O.}, title = {Ground- and excited-state properties of the polar and paramagnetic RbSr molecule: A comparative study}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2014}, volume = {90}, number = {1}, article-number = {012507}, doi = {10.1103/PhysRevA.90.012507}, language = {English}, unique-id = {ISI:000338736400004}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2013 A-F Bitbol, A Canaguier-Durand, A Lambrecht and S Reynaud "Pairwise summation approximation for Casimir potentials and its limitations" , Phys. Rev. B 87 045413 |
Abstract: We investigate the error made by the pairwise summation (PWS) approximation in three geometries where the exact formula for the Casimir interaction is known: atom-slab, slab-slab, and sphere-slab configurations. For each case, the interactions are calculated analytically by summing the van der Waals interactions between the two objects. We show that the PWS result is incorrect even for an infinitely thin slab in the atom-slab configuration, because of local field effects, unless the material is infinitely dilute. In the experimentally relevant case of dielectric materials, in all considered geometries the error made by the PWS approximation is much higher than the well-known value obtained for perfect reflectors in the long-range regime. This error is maximized for permittivities close to the one of silicon. DOI: 10.1103/PhysRevB.87.045413 |
BibTeX:
@article{Bitbol2013, author = {Bitbol, Anne-Florence and Canaguier-Durand, Antoine and Lambrecht, Astrid and Reynaud, Serge}, title = {Pairwise summation approximation for Casimir potentials and its limitations}, journal = {PHYSICAL REVIEW B}, journal = {Phys. Rev. B}, year = {2013}, volume = {87}, number = {4}, article-number = {045413}, doi = {10.1103/PhysRevB.87.045413}, language = {English}, unique-id = {ISI:000313424600006}, web-of-science-categories = {Physics, Condensed Matter} } |
2013 G Dufour, A Gerardin, R Guerout, A Lambrecht, VV Nesvizhevsky, S Reynaud and AY Voronin "Quantum reflection of antihydrogen from the Casimir potential above matter slabs" , Phys. Rev. A 87 012901 |
Abstract: We study quantum reflection of antihydrogen atoms from matter slabs due to the van der Waals-Casimir-Polder potential. By taking into account the specificities of antihydrogen and the optical properties and width of the slabs, we calculate realistic estimates for the potential and quantum reflection amplitudes. Next we discuss the paradoxical result of larger reflection coefficients estimated for weaker potentials in terms of the Schwarzian derivative. We analyze the limiting case of reflections at small energies, which are characterized by a scattering length and have interesting applications for trapping and guiding antihydrogen using material walls. DOI: 10.1103/PhysRevA.87.012901 |
BibTeX:
@article{Dufour2013, author = {Dufour, G. and Gerardin, A. and Guerout, R. and Lambrecht, A. and Nesvizhevsky, V. V. and Reynaud, S. and Voronin, A. Yu.}, title = {Quantum reflection of antihydrogen from the Casimir potential above matter slabs}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2013}, volume = {87}, number = {1}, article-number = {012901}, doi = {10.1103/PhysRevA.87.012901}, language = {English}, unique-id = {ISI:000312994700008}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2013 G Dufour, R Guerout, A Lambrecht, VV Nesvizhevsky, S Reynaud and AY Voronin "Quantum reflection of antihydrogen from nanoporous media" , Phys. Rev. A 87 022506 |
Abstract: We study quantum reflection of antihydrogen atoms from nanoporous media due to the Casimir-Polder potential. Using a simple effective medium model, we show a dramatic increase of the probability of quantum reflection of antihydrogen atoms if the porosity of the medium increases. We discuss the limiting case of reflections at small energies, which have interesting applications for trapping and guiding antihydrogen using material walls. DOI: 10.1103/PhysRevA.87.022506 |
BibTeX:
@article{Dufour2013a, author = {Dufour, G. and Guerout, R. and Lambrecht, A. and Nesvizhevsky, V. V. and Reynaud, S. and Voronin, A. Yu}, title = {Quantum reflection of antihydrogen from nanoporous media}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2013}, volume = {87}, number = {2}, article-number = {022506}, doi = {10.1103/PhysRevA.87.022506}, language = {English}, unique-id = {ISI:000315142500009}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2013 A Dupays, B Lamine and A Blanchard "Can dark energy emerge from quantum effects in a compact extra dimension?" , Astron. Astrophys. 554 A60 |
Abstract: The origin of the accelerated expansion of the universe is a major problem in both modern cosmology and theoretical physics. In quantum field theory, simple estimations of the vacuum contribution to the density energy of the Universe are known to lead to catastrophically high values compared to observations. A gravitational Casimir effect from an additional compact dimension of space is known to lead to an effective cosmological constant. Nevertheless, such a contribution by itself is usually not regarded as a plausible source for accelerating the expansion, given the constraints on such scenarios. Here, we propose that the Casimir vacuum contribution of the gravitational field actually provides a low positive value to the density energy of the universe. The key new ingredient is to assume that only modes with shorter wavelengths than the Hubble radius contribute to the vacuum energy. Such a contribution gives a positive energy density, has a naturally Lorentz invariant equation of state in the usual 4D spacetime, and can thus be interpreted as a cosmological constant. Its value agrees with observations for a radius of a fifth extra dimension given by 35 mu m. The implied modification of the gravitational inverse square law is close but below existing limits from experiments testing gravity at short range. |
BibTeX:
@article{Dupays2013, author = {Dupays, A. and Lamine, B. and Blanchard, A.}, title = {Can dark energy emerge from quantum effects in a compact extra dimension?}, journal = {ASTRONOMY & ASTROPHYSICS}, journal = {Astron. Astrophys.}, year = {2013}, volume = {554}, article-number = {A60}, doi = {10.1051/0004-6361/201321060}, language = {English}, unique-id = {ISI:000320444200059}, web-of-science-categories = {Astronomy & Astrophysics} } |
2013 R Guerout, J Lussange, HB Chan, A Lambrecht and S Reynaud "Thermal Casimir force between nanostructured surfaces" , Phys. Rev. A 87 052514 |
Abstract: We present detailed calculations for the Casimir force between a plane and a nanostructured surface at finite temperature in the framework of the scattering theory. We then study numerically the effect of finite temperature as a function of the grating parameters and the separation distance. We also infer nontrivial geometrical effects on the Casimir interaction via a comparison with the proximity force approximation. Finally, we compare our calculations with data from experiments performed with nanostructured surfaces. |
BibTeX:
@article{Guerout2013, author = {Guerout, R. and Lussange, J. and Chan, H. B. and Lambrecht, A. and Reynaud, S.}, title = {Thermal Casimir force between nanostructured surfaces}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2013}, volume = {87}, number = {5}, article-number = {052514}, doi = {10.1103/PhysRevA.87.052514}, language = {English}, unique-id = {ISI:000319389300007}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2013 M-T Jaekel, B Lamine and S Reynaud "Phases and relativity in atomic gravimetry" , Class. Quantum Gravity 30 065006 |
Abstract: The phase observable measured by an atomic gravimeter built up on stimulated Raman transitions is discussed in a fully relativistic context. It is written in terms of laser phases which are invariant under relativistic gauge transformations. The phase shift Phi is the sum of light and atomic contributions which are connected to one another through their interplay with conservation laws at the interaction vertices. In the case of a closed geometry, a compact form of the phase shift is written in terms of a Legendre transform of the laser phases. These general expressions are illustrated by discussing two techniques used for compensating the Doppler shift: one corresponding to chirped frequencies and the other one to ramped variations. |
BibTeX:
@article{Jaekel2013, author = {Jaekel, M-T and Lamine, B. and Reynaud, S.}, title = {Phases and relativity in atomic gravimetry}, journal = {CLASSICAL AND QUANTUM GRAVITY}, journal = {Class. Quantum Gravity}, year = {2013}, volume = {30}, number = {6}, article-number = {065006}, doi = {10.1088/0264-9381/30/6/065006}, language = {English}, unique-id = {ISI:000315676100006}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Particles & Fields} } |
2013 B Lenoir, B Christophe and S Reynaud "Experimental demonstration of bias rejection from electrostatic accelerometer measurements" , Measurement 46 1411-1420. |
Abstract: In order to test gravitation in the Solar System, it is necessary to improve the orbit restitution of interplanetary spacecrafts. The addition of an accelerometer on board is a major step toward this goal because this instrument measures the non-gravitational acceleration of the spacecraft. It must be able to perform measurements at low frequencies with no bias to provide an additional observable of interest. Since electrostatic accelerometers suffer a bias, a technological upgrade has been proposed by Onera. It consists in adding to an electrostatic accelerometer a rotating platform which allows modulating the signal of interest and retrieving it without bias after post-processing. Using this principle, a measurement method and a post-processing method have been developed. The objective of this article is to validate these methods experimentally. To do so, a horizontally controlled pendulum was used to apply a known signal to an accelerometer mounted on a rotating platform. The processing of the experimental data demonstrates the ability to make acceleration measurements with no bias. In addition, the experimental precision on the unbiased acceleration obtained after post-processing corresponds to the precision predicted theoretically. (C) 2012 Elsevier Ltd. All rights reserved. |
BibTeX:
@article{Lenoir2013, author = {Lenoir, Benjamin and Christophe, Bruno and Reynaud, Serge}, title = {Experimental demonstration of bias rejection from electrostatic accelerometer measurements}, journal = {MEASUREMENT}, journal = {Measurement}, year = {2013}, volume = {46}, number = {4}, pages = {1411-1420}, doi = {10.1016/j.measurement.2012.12.004}, language = {English}, unique-id = {ISI:000316431100007}, web-of-science-categories = {Engineering, Multidisciplinary; Instruments & Instrumentation} } |
2013 B Lenoir, B Christophe and S Reynaud "Unbiased acceleration measurements with an electrostatic accelerometer on a rotating platform" , Adv. Space Res. 51 188-197. |
Abstract: The Gravity Advanced Package is an instrument composed of an electrostatic accelerometer called MicroSTAR and a rotating platform called Bias Rejection System. It aims at measuring with no bias the non-gravitational acceleration of a spacecraft. It is envisioned to be embarked on an interplanetary spacecraft as a tool to test the laws of gravitation. MicroSTAR is based on Onera's experience and inherits in orbit technology. The addition of the rotating platform is a technological upgrade which allows using an electrostatic accelerometer to make measurements at low frequencies with no bias. To do so, the Bias Rejection System rotates MicroSTAR such that the signal of interest is separated from the bias of the instrument in the frequency domain. Making these unbiased low-frequency measurements requires post-processing the data. The signal processing technique developed for this purpose is the focus of this article. It allows giving the conditions under which the bias is completely removed from the signal of interest. And the precision of the unbiased measurements can be fully characterized: given the characteristics of the subsystems, it is possible to reach a precision of 1 pm s(-2) on the non-gravitational acceleration for an integration time of 3 h. (C) 2012 COSPAR. Published by Elsevier Ltd. All rights reserved. |
BibTeX:
@article{Lenoir2013a, author = {Lenoir, Benjamin and Christophe, Bruno and Reynaud, Serge}, title = {Unbiased acceleration measurements with an electrostatic accelerometer on a rotating platform}, journal = {ADVANCES IN SPACE RESEARCH}, journal = {Adv. Space Res.}, year = {2013}, volume = {51}, number = {1}, pages = {188-197}, doi = {10.1016/j.asr.2012.08.012}, language = {English}, unique-id = {ISI:000314013100021}, web-of-science-categories = {Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences} } |
2013 VV Nesvizhevsky, AY Voronin, A Lambrecht, S Reynaud, EV Lychagin, AY Muzychka and AV Strelkov "Quantum levitation of nanoparticles seen with ultracold neutrons" , Crystallogr. Rep. 58 743-748. |
Abstract: Analyzing new experiments with ultracold neutrons (UCNs) we show that physical adsorption of nanoparticles/nanodroplets, levitating in high-excited states in a deep and broad potential well formed by van der Waals/Casimir-Polder (vdW/CP) forces results in new effects on a cross-road of the fields of fundamental interactions, neutron, surface and nanoparticle physics. Accounting for the interaction of UCNs with nanoparticles explains a recently discovered intriguing so-called ``small heating'' of UCNs in traps. It might be relevant to the striking conflict of the neutron lifetime experiments with smallest reported uncertainties by adding false effects there. |
BibTeX:
@article{Nesvizhevsky2013, author = {Nesvizhevsky, V. V. and Voronin, A. Yu and Lambrecht, A. and Reynaud, S. and Lychagin, E. V. and Muzychka, A. Yu and Strelkov, A. V.}, title = {Quantum levitation of nanoparticles seen with ultracold neutrons}, journal = {CRYSTALLOGRAPHY REPORTS}, journal = {Crystallogr. Rep.}, year = {2013}, volume = {58}, number = {5}, pages = {743-748}, doi = {10.1134/S1063774513050088}, language = {English}, unique-id = {ISI:000324492300014}, web-of-science-categories = {Crystallography} } |
2012 RO Behunin, F Intravaia, DAR Dalvit, PA Maia Neto and S Reynaud "Modeling electrostatic patch effects in Casimir force measurements" , Phys. Rev. A 85 012504 |
Abstract: Electrostatic patch potentials give rise to forces between neutral conductors at distances in the micrometer range and must be accounted for in the analysis of Casimir force experiments. In this paper we develop a quasilocal model for describing random potentials on metallic surfaces. In contrast to some previously published results, we find that patches may provide a significant contribution to the measured signal and thus may be a more important systematic effect than was previously anticipated. Additionally, patches may render the experimental data at distances below 1 mu m compatible with theoretical predictions based on the Drude model. |
BibTeX:
@article{Behunin2012, author = {Behunin, R. O. and Intravaia, F. and Dalvit, D. A. R. and Maia Neto, P. A. and Reynaud, S.}, title = {Modeling electrostatic patch effects in Casimir force measurements}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2012}, volume = {85}, number = {1}, article-number = {012504}, doi = {10.1103/PhysRevA.85.012504}, language = {English}, unique-id = {ISI:000298860400009}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2012 RO Behunin, Y Zeng, DAR Dalvit and S Reynaud "Electrostatic patch effects in Casimir force experiments performed in the sphere-plane geometry" , Phys. Rev. A 86 052509 |
Abstract: Patch potentials arising from the polycrystalline structure of material samples may contribute significantly to measured signals in Casimir force experiments. Most of these experiments are performed in the sphere-plane geometry; yet, up to now all analysis of patch effects has been taken into account using the proximity force approximation which, in essence, treats the sphere as a plane. In this paper we present the exact solution for the electrostatic patch interaction energy in the sphere-plane geometry and derive exact analytical formulas for the electrostatic patch force and minimizing potential. We perform numerical simulations to analyze the distance dependence of the minimizing potential as a function of patch size, and we quantify the sphere-plane patch force for a particular patch layout. Once the patch potentials on both surfaces are measured by dedicated experiments our formulas can be used to exactly quantify the sphere-plane patch force in the particular experimental situation. |
BibTeX:
@article{Behunin2012a, author = {Behunin, R. O. and Zeng, Y. and Dalvit, D. A. R. and Reynaud, S.}, title = {Electrostatic patch effects in Casimir force experiments performed in the sphere-plane geometry}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2012}, volume = {86}, number = {5}, article-number = {052509}, doi = {10.1103/PhysRevA.86.052509}, language = {English}, unique-id = {ISI:000311138300003}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2012 A Canaguier-Durand, G-L Ingold, M-T Jaekel, A Lambrecht, PA Maia Neto and S Reynaud "Classical Casimir interaction in the plane-sphere geometry" , Phys. Rev. A 85 052501 |
Abstract: We study the Casimir interaction in the plane-sphere geometry in the classical limit of high temperatures. In this limit, the finite conductivity of the metallic plates needs to be taken into account. For the Drude model, the classical Casimir interaction is nevertheless found to be independent of the conductivity so that it can be described by a single universal function depending only on the aspect ratio x = L/R, where L is the interplate distance and R is the sphere radius. This universal function differs from the one found for perfect reflectors and is in principle amenable to experimental tests. The asymptotic approach of the exact result to the proximity force approximation appears to be well fitted by polynomial expansions in ln x. |
BibTeX:
@article{Canaguier-Durand2012, author = {Canaguier-Durand, Antoine and Ingold, Gert-Ludwig and Jaekel, Marc-Thierry and Lambrecht, Astrid and Maia Neto, Paulo A. and Reynaud, Serge}, title = {Classical Casimir interaction in the plane-sphere geometry}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2012}, volume = {85}, number = {5}, article-number = {052501}, doi = {10.1103/PhysRevA.85.052501}, language = {English}, unique-id = {ISI:000303385000003}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2012 B Christophe, LJ Spilker, JD Anderson, N Andre, SW Asmar, J Aurnou, D Banfield, A Barucci, O Bertolami, R Bingham, P Brown, B Cecconi, JM Courty, H Dittus, LN Fletcher, B Foulon, F Francisco, PJS Gil, KH Glassmeier, W Grundy, C Hansen, J Helbert, R Helled, H Hussmann, B Lamine, C Laemmerzahl, L Lamy, R Lehoucq, B Lenoir, A Levy, G Orton, J Paramos, J Poncy, F Postberg, SV Progrebenko, KR Reh, S Reynaud, C Robert, E Samain, J Saur, KM Sayanagi, N Schmitz, H Selig, F Sohl, TR Spilker, R Srama, K Stephan, P Touboul and P Wolf "OSS (Outer Solar System): a fundamental and planetary physics mission to Neptune, Triton and the Kuiper Belt" , Exp. Astron. 34 203-242. |
Abstract: The present OSS (Outer Solar System) mission continues a long and bright tradition by associating the communities of fundamental physics and planetary sciences in a single mission with ambitious goals in both domains. OSS is an M-class mission to explore the Neptune system almost half a century after the flyby of the Voyager 2 spacecraft. Several discoveries were made by Voyager 2, including the Great Dark Spot (which has now disappeared) and Triton's geysers. Voyager 2 revealed the dynamics of Neptune's atmosphere and found four rings and evidence of ring arcs above Neptune. Benefiting from a greatly improved instrumentation, a mission as OSS would result in a striking advance in the study of the farthest planet of the solar system. Furthermore, OSS would provide a unique opportunity to visit a selected Kuiper Belt object subsequent to the passage of the Neptunian system. OSS would help consolidate the hypothesis of the origin of Triton as a Kuiper Belt object captured by Neptune, and to improve our knowledge on the formation of the solar system. The OSS probe would carry instruments allowing precise tracking of the spacecraft during the cruise. It would facilitate the best possible tests of the laws of gravity in deep space. These objectives are important for fundamental physics, as they test General Relativity, our current theoretical description of gravitation, but also for cosmology, astrophysics and planetary science, as General Relativity is used as a tool in all these domains. In particular, the models of solar system formation uses General Relativity to describe the crucial role of gravity. OSS is proposed as an international cooperation between ESA and NASA, giving the capability for ESA to launch an M-class mission towards the farthest planet of the solar system, and to a Kuiper Belt object. The proposed mission profile would allow to deliver a 500 kg class spacecraft. The design of the probe is mainly constrained by the deep space gravity test in order to minimize the perturbation of the accelerometer measurement. |
BibTeX:
@article{Christophe2012, author = {Christophe, B. and Spilker, L. J. and Anderson, J. D. and Andre, N. and Asmar, S. W. and Aurnou, J. and Banfield, D. and Barucci, A. and Bertolami, O. and Bingham, R. and Brown, P. and Cecconi, B. and Courty, J. -M. and Dittus, H. and Fletcher, L. N. and Foulon, B. and Francisco, F. and Gil, P. J. S. and Glassmeier, K. H. and Grundy, W. and Hansen, C. and Helbert, J. and Helled, R. and Hussmann, H. and Lamine, B. and Laemmerzahl, C. and Lamy, L. and Lehoucq, R. and Lenoir, B. and Levy, A. and Orton, G. and Paramos, J. and Poncy, J. and Postberg, F. and Progrebenko, S. V. and Reh, K. R. and Reynaud, S. and Robert, C. and Samain, E. and Saur, J. and Sayanagi, K. M. and Schmitz, N. and Selig, H. and Sohl, F. and Spilker, T. R. and Srama, R. and Stephan, K. and Touboul, P. and Wolf, P.}, title = {OSS (Outer Solar System): a fundamental and planetary physics mission to Neptune, Triton and the Kuiper Belt}, journal = {EXPERIMENTAL ASTRONOMY}, journal = {Exp. Astron.}, year = {2012}, volume = {34}, number = {2, SI}, pages = {203-242}, doi = {10.1007/s10686-012-9309-y}, language = {English}, unique-id = {ISI:000309230600004}, web-of-science-categories = {Astronomy & Astrophysics} } |
2012 R Guerout, J Lussange, FSS Rosa, J-P Hugonin, DAR Dalvit, J-J Greffet, A Lambrecht and S Reynaud "Enhanced radiative heat transfer between nanostructured gold plates" , In European thermal sciences. 395 012154 |
Abstract: We compute the radiative heat transfer between nanostructured gold plates in the framework of the scattering theory. We predict an enhancement of the heat transfer as we increase the depth of the corrugations while keeping the distance of closest approach fixed. We interpret this effect in terms of the evolution of plasmonic and guided modes as a function of the grating's geometry. |
BibTeX:
@inproceedings{Guerout2012, author = {Guerout, R. and Lussange, J. and Rosa, F. S. S. and Hugonin, J-P and Dalvit, D. A. R. and Greffet, J-J and Lambrecht, A. and Reynaud, S.}, title = {Enhanced radiative heat transfer between nanostructured gold plates}, booktitle = {European thermal sciences}, year = {2012}, volume = {395}, article-number = {012154}, doi = {10.1088/1742-6596/395/1/012154}, language = {English}, unique-id = {ISI:000312264800154}, web-of-science-categories = {Thermodynamics; Engineering, Mechanical; Physics, Applied} } |
2012 R Guerout, J Lussange, FSS Rosa, J-P Hugonin, DAR Dalvit, J-J Greffet, A Lambrecht and S Reynaud "Enhanced radiative heat transfer between nanostructured gold plates" , Phys. Rev. B 85 180301 |
Abstract: We compute the radiative heat transfer between nanostructured gold plates in the framework of the scattering theory. We predict an enhancement of the heat transfer as we increase the depth of the corrugations while keeping the distance of closest approach fixed. We interpret this effect in terms of the evolution of plasmonic and guided modes as a function of the grating's geometry. |
BibTeX:
@article{Guerout2012a, author = {Guerout, R. and Lussange, J. and Rosa, F. S. S. and Hugonin, J-P and Dalvit, D. A. R. and Greffet, J-J and Lambrecht, A. and Reynaud, S.}, title = {Enhanced radiative heat transfer between nanostructured gold plates}, journal = {PHYSICAL REVIEW B}, journal = {Phys. Rev. B}, year = {2012}, volume = {85}, number = {18}, article-number = {180301}, doi = {10.1103/PhysRevB.85.180301}, language = {English}, unique-id = {ISI:000304394400001}, web-of-science-categories = {Physics, Condensed Matter} } |
2012 A Hees, B Lamine, S Reynaud, M-T Jaekel, C Le Poncin-Lafitte, V Lainey, A Fuezfa, J-M Courty, V Dehant and P Wolf "Radioscience simulations in general relativity and in alternative theories of gravity" , Class. Quantum Gravity 29 235027 |
Abstract: This paper deals with tests of general relativity (GR) in the Solar System using tracking observables from planetary spacecraft. We present a new software that simulates the Range and Doppler signals resulting from a given spacetime metric. This flexible approach allows one to perform simulations in GR as well as in alternative metric theories of gravity. The outputs of this software provide templates of anomalous residuals that should show up in real data if the underlying theory of gravity is not GR. Those templates can be used to give a rough estimation of constraints on additional parameters entering alternative theory of gravity and also signatures that can be searched for in data from past or future space missions aiming at testing gravitational laws in the Solar System. As an application of the potentiality of this software, we present some simulations performed for Cassini-like mission in post-Einsteinian gravity and in the context of MOND external field effect. We derive signatures arising from these alternative theories of gravity and estimate expected amplitudes of the anomalous residuals. |
BibTeX:
@article{Hees2012, author = {Hees, A. and Lamine, B. and Reynaud, S. and Jaekel, M-T and Le Poncin-Lafitte, C. and Lainey, V. and Fuezfa, A. and Courty, J-M and Dehant, V. and Wolf, P.}, title = {Radioscience simulations in general relativity and in alternative theories of gravity}, journal = {CLASSICAL AND QUANTUM GRAVITY}, journal = {Class. Quantum Gravity}, year = {2012}, volume = {29}, number = {23}, article-number = {235027}, doi = {10.1088/0264-9381/29/23/235027}, language = {English}, unique-id = {ISI:000311101800029}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Particles & Fields} } |
2012 P Jian, O Pinel, C Fabre, B Lamine and N Treps "Real-time displacement measurement immune from atmospheric parameters using optical frequency combs" , Opt. Express 20 27133-27146. |
Abstract: We propose a direct and real-time displacement measurement using an optical frequency comb, able to compensate optically for index of refraction variations due to atmospheric parameters. This scheme could be useful for applications requiring stringent precision over a long distance in air, a situation where dispersion becomes the main limitation. The key ingredient is the use of a mode-locked laser as a precise source for multi-wavelength interferometry in a homodyne detection scheme. By shaping temporally the local oscillator, one can directly access the desired parameter (distance variation) while being insensitive to fluctuations induced by parameters of the environment such as pressure, temperature, humidity and CO2 content. (C) 2012 Optical Society of America |
BibTeX:
@article{Jian2012, author = {Jian, Pu and Pinel, Olivier and Fabre, Claude and Lamine, Brahim and Treps, Nicolas}, title = {Real-time displacement measurement immune from atmospheric parameters using optical frequency combs}, journal = {OPTICS EXPRESS}, journal = {Opt. Express}, year = {2012}, volume = {20}, number = {24}, pages = {27133-27146}, doi = {10.1364/OE.20.027133}, language = {English}, unique-id = {ISI:000312452800103}, web-of-science-categories = {Optics} } |
2012 A Lambrecht and S Reynaud "Casimir effect: theory and experiments" , Int. J. Mod. Phys. A 27 1260013 |
Abstract: The Casimir effect is a crucial prediction of Quantum Field Theory which has fascinating connections with open questions in fundamental physics. The ideal formula written by Casimir does not describe real experiments and it has to be generalized by taking into account the effects of imperfect reflection, thermal fluctuations, geometry as well as the corrections coming from surface physics. We discuss these developments in Casimir physics and give the current status in the comparison between theory and experiment after years of improvements in measurements as well as theory. |
BibTeX:
@article{Lambrecht2012, author = {Lambrecht, Astrid and Reynaud, Serge}, title = {Casimir effect: theory and experiments}, journal = {INTERNATIONAL JOURNAL OF MODERN PHYSICS A}, journal = {Int. J. Mod. Phys. A}, year = {2012}, volume = {27}, number = {15, SI}, article-number = {1260013}, doi = {10.1142/S0217751X12600135}, language = {English}, unique-id = {ISI:000305249200014}, web-of-science-categories = {Physics, Nuclear; Physics, Particles & Fields} } |
2012 J Lussange, R Guerout and A Lambrecht "Casimir energy between nanostructured gratings of arbitrary periodic profile" , Phys. Rev. A 86 062502 |
Abstract: We study the lateral dependence of the Casimir energy for different corrugated gratings of arbitrary periodic profile. To this end we model the profiles as stacks of horizontal rectangular slices following the profiles' shape and evaluate numerically the Casimir energy between them for different relative lateral displacements of the two corrugated plates. We compare our results with predictions obtained within the proximity force approximation (PFA). At comparable separation of the corrugated plates and geometric parameters, we find a strong dependence of the Casimir energy on the shape of the corrugation profiles. |
BibTeX:
@article{Lussange2012, author = {Lussange, J. and Guerout, R. and Lambrecht, A.}, title = {Casimir energy between nanostructured gratings of arbitrary periodic profile}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2012}, volume = {86}, number = {6}, article-number = {062502}, doi = {10.1103/PhysRevA.86.062502}, language = {English}, unique-id = {ISI:000312021800004}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2012 J Lussange, R Guerout, FSS Rosa, JJ Greffet, A Lambrecht and S Reynaud "Radiative heat transfer between two dielectric nanogratings in the scattering approach" , Phys. Rev. B 86 085432 |
Abstract: We present a theoretical study of radiative heat transfer between dielectric nanogratings in the scattering approach. As a comparison with these exact results, we also evaluate the domain of validity of Derjaguin's proximity approximation (PA). We consider a system of two corrugated silica plates with various grating geometries, separation distances, and lateral displacement of the plates with respect to one another. Numerical computations show that while the PA is a good approximation for aligned gratings, it cannot be used when the gratings are laterally displaced. We illustrate this by a thermal modulator device for nanosystems based on such a displacement. |
BibTeX:
@article{Lussange2012a, author = {Lussange, J. and Guerout, R. and Rosa, F. S. S. and Greffet, J. -J. and Lambrecht, A. and Reynaud, S.}, title = {Radiative heat transfer between two dielectric nanogratings in the scattering approach}, journal = {PHYSICAL REVIEW B}, journal = {Phys. Rev. B}, year = {2012}, volume = {86}, number = {8}, article-number = {085432}, doi = {10.1103/PhysRevB.86.085432}, language = {English}, unique-id = {ISI:000307724000009}, web-of-science-categories = {Physics, Condensed Matter} } |
2012 PA Maia Neto, A Lambrecht and S Reynaud "Roughness correction to the Casimir force: Beyond the Proximity Force Approximation (vol 69, pg 924, 2005)" , EPL 100 29902 |
BibTeX:
@article{MaiaNeto2012, author = {Maia Neto, P. A. and Lambrecht, A. and Reynaud, S.}, title = {Roughness correction to the Casimir force: Beyond the Proximity Force Approximation (vol 69, pg 924, 2005)}, journal = {EPL}, journal = {EPL}, year = {2012}, volume = {100}, number = {2}, article-number = {29902}, doi = {10.1209/0295-5075/100/29902}, language = {English}, unique-id = {ISI:000311031000042}, web-of-science-categories = {Physics, Multidisciplinary} } |
2012 PA Maia Neto, A Lambrecht and S Reynaud "Casimir effect with rough metallic mirrors (vol 72, 012115, 2005)" , Phys. Rev. A 86 059901 |
BibTeX:
@article{MaiaNeto2012a, author = {Maia Neto, Paulo A. and Lambrecht, Astrid and Reynaud, Serge}, title = {Casimir effect with rough metallic mirrors (vol 72, 012115, 2005)}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2012}, volume = {86}, number = {5}, article-number = {059901}, doi = {10.1103/PhysRevA.86.059901}, language = {English}, unique-id = {ISI:000310499500006}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2012 VV Nesvizhevsky, AY Voronin, A Lambrecht and S Reynaud "Study of levitating nanoparticles using ultracold neutrons" , New J. Phys. 14 093053 |
Abstract: Physical adsorption of atoms, molecules and clusters on the surface is well known. It is linked to many other phenomena in physics, chemistry and biology and has numerous practical applications. Due to limitations of the analytical tools usually used, studies of adsorption are limited to the particle sizes of up to similar to 10(2)-10(3) atoms. Following a general formalism developed in this field, we apply it to even larger objects and discover qualitatively new phenomena. A large particle is bound to the surface in a deep and broad potential well formed by van der Waals/Casimir-Polder forces appearing due to the particle and surface electric polarization. The well depth is significantly larger than the characteristic energy 3/2k(B)T of a particle's thermal motion; thus such a nanoparticle is settled in long-living states. Nanoparticles in high-excited states form a two-dimensional gas of objects bound to the surface but quasi-freely traveling along the surface under certain conditions. A particularly interesting feature of this model consists in the prediction of small-energy-transfer inelastic scattering of ultracold neutrons (UCN) on solid/liquid surfaces covered by such levitating nanoparticles/nano-droplets. The change in UCN energy is due to the Doppler shift induced by UCN collisions with nanoparticles/nano-droplets; the energy change is almost as small as the UCN initial energy. We compared theoretical estimations of our model to all existing data on inelastic scattering of UCN with small energy transfers and found that they agree quite well. As our theoretical formalism provides robust predictions of some data and the experimental data are rather detailed and precise, we conclude that the recently discovered intriguing phenomenon of small heating of UCN in traps is due to their collisions with such levitating nanoparticles. Moreover, this new phenomenon might be relevant to the striking contradiction between the results of the neutron lifetime measurements and the smallest reported uncertainties, as it might cause major false effects in these experiments; thus, it affects fundamental conclusions concerning precision checks of unitarity of the Cabibbo-Kobayashi-Maskawa matrix, cosmology and astrophysics. Dedicated measurements of UCN inelastic scattering on specially prepared surfaces and nanoparticles/nano-droplets levitating above them might provide a unique method for studying surface potentials. |
BibTeX:
@article{Nesvizhevsky2012, author = {Nesvizhevsky, V. V. and Voronin, A. Yu and Lambrecht, A. and Reynaud, S.}, title = {Study of levitating nanoparticles using ultracold neutrons}, journal = {NEW JOURNAL OF PHYSICS}, journal = {New J. Phys.}, year = {2012}, volume = {14}, article-number = {093053}, doi = {10.1088/1367-2630/14/9/093053}, language = {English}, unique-id = {ISI:000309393400011}, web-of-science-categories = {Physics, Multidisciplinary} } |
2012 AY Voronin, VV Nesvizhevsky and S Reynaud "Interference of the whispering gallery states of antihydrogen" , J. Phys. B-At. Mol. Opt. Phys. 45 165007 |
Abstract: We theoretically study the interference of the long-living quasi-stationary quantum states of antihydrogen atoms, localized near a concave material surface. Such states are an antimatter analogue of the whispering gallery states of neutrons and matter atoms, and similar to the whispering gallery modes of sound and electro-magnetic waves. Quantum states of antihydrogen are formed by the combined effect of quantum reflection from the van der Waals/Casimir-Polder (vdW/CP) potential of the surface and the centrifugal potential. We point out a method for precision studies of quantum reflection of anti-atoms from vdW/CP potential; this method uses the interference of the whispering gallery states of antihydrogen. |
BibTeX:
@article{Voronin2012, author = {Voronin, A. Yu and Nesvizhevsky, V. V. and Reynaud, S.}, title = {Interference of the whispering gallery states of antihydrogen}, journal = {JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS}, journal = {J. Phys. B-At. Mol. Opt. Phys.}, year = {2012}, volume = {45}, number = {16}, article-number = {165007}, doi = {10.1088/0953-4075/45/16/165007}, language = {English}, unique-id = {ISI:000307517900008}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2012 AY Voronin, VV Nesvizhevsky and S Reynaud "Whispering-gallery states of antihydrogen near a curved surface" , Phys. Rev. A 85 014902 |
Abstract: We predict the existence of antihydrogen atom long-living quasistationary states, localized near a curved material surface due to quantum reflection from the van der Waals-Casimir potential. Such states are an atom-wave analog of the whispering-gallery (WG) modes, known in acoustics, optics, and neutron physics. We argue that the WG states of antihydrogen atoms could be regarded as a close analog of recently predicted gravitational states of antihydrogen where the centrifugal potential plays the role of the linear gravitational potential. We point out a method for the precision measurement of anti-atom-matter interactions, based on the study of interference of WG antihydrogen states. |
BibTeX:
@article{Voronin2012a, author = {Voronin, A. Yu. and Nesvizhevsky, V. V. and Reynaud, S.}, title = {Whispering-gallery states of antihydrogen near a curved surface}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2012}, volume = {85}, number = {1}, article-number = {014902}, doi = {10.1103/PhysRevA.85.014902}, language = {English}, unique-id = {ISI:000299265000011}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2012 P Wolf, L Blanchet, CJ Borde, S Reynaud, C Salomon and C Cohen-Tannoudji "Reply to comment on: `Does an atom interferometer test the gravitational redshift at the Compton frequency?'" , Class. Quantum Gravity 29 048002 |
Abstract: We reply to a comment by Hohensee et al on: `Does an atom interferometer test the gravitational redshift at the Compton frequency' and show that the main result of that paper, namely that atom interferometric gravimeters do not test the gravitational redshift at the Compton frequency, remains valid. |
BibTeX:
@article{Wolf2012, author = {Wolf, Peter and Blanchet, Luc and Borde, Christian J. and Reynaud, Serge and Salomon, Christophe and Cohen-Tannoudji, Claude}, title = {Reply to comment on: `Does an atom interferometer test the gravitational redshift at the Compton frequency?'}, journal = {CLASSICAL AND QUANTUM GRAVITY}, journal = {Class. Quantum Gravity}, year = {2012}, volume = {29}, number = {4}, article-number = {048002}, doi = {10.1088/0264-9381/29/4/048002}, language = {English}, unique-id = {ISI:000300410000010}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Particles & Fields} } |
2011 I Antoniadis, S Baessler, O Bertolami, D Dubbers, A Meyerovich, V Nesvizhevsky, K Protasov and S Reynaud "Workshop GRANIT-2010, 14-19 February 2010, Les Houches, France" , C. R. Phys. 12 703-706. |
BibTeX:
@article{Antoniadis2011, author = {Antoniadis, Ignatios and Baessler, Stefan and Bertolami, Orfeu and Dubbers, Dirk and Meyerovich, Alexander and Nesvizhevsky, Valery and Protasov, Konstantin and Reynaud, Serge}, title = {Workshop GRANIT-2010, 14-19 February 2010, Les Houches, France}, journal = {COMPTES RENDUS PHYSIQUE}, journal = {C. R. Phys.}, year = {2011}, volume = {12}, number = {8}, pages = {703-706}, doi = {10.1016/j.crhy.2011.09.001}, language = {English}, unique-id = {ISI:000296402600001}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Multidisciplinary} } |
2011 I Antoniadis, S Baessler, M Buechner, VV Fedorov, S Hoedl, A Lambrecht, VV Nesvizhevsky, G Pignol, KV Protasov, S Reynaud and Y Sobolev "Short-range fundamental forces" , C. R. Phys. 12 755-778. |
Abstract: We consider theoretical motivations to search for extra short-range fundamental forces as well as experiments constraining their parameters. The forces could be of two types: 1) spin-independent forces; 2) spin-dependent axion-like forces. Different experimental techniques are sensitive in respective ranges of characteristic distances The techniques include measurements of gravity at short distances, searches for extra interactions on top of the Casimir force, precision atomic and neutron experiments. We locus on neutron constraints, thus the range of characteristic distances considered here corresponds to the range accessible for neutron experiments. (C) 2011 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved. |
BibTeX:
@article{Antoniadis2011a, author = {Antoniadis, I. and Baessler, S. and Buechner, M. and Fedorov, V. V. and Hoedl, S. and Lambrecht, A. and Nesvizhevsky, V. V. and Pignol, G. and Protasov, K. V. and Reynaud, S. and Sobolev, Yu.}, title = {Short-range fundamental forces}, journal = {COMPTES RENDUS PHYSIQUE}, journal = {C. R. Phys.}, year = {2011}, volume = {12}, number = {8}, pages = {755-778}, doi = {10.1016/j.crhy.2011.05.004}, language = {English}, unique-id = {ISI:000296402600004}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Multidisciplinary} } |
2011 M Aymar, R Guerout and O Dulieu "Structure of the alkali-metal-atom plus strontium molecular ions: Towards photoassociation and formation of cold molecular ions" , J. Chem. Phys. 135 064305 |
Abstract: The potential energy curves, permanent and transition dipole moments, and the static dipolar polarizability, of molecular ions composed of one alkali-metal atom and a strontium ion are determined with a quantum chemistry approach. The molecular ions are treated as effective two-electron systems and are treated using effective core potentials including core polarization, large gaussian basis sets, and full configuration interaction. In the perspective of upcoming experiments aiming at merging cold atom and cold ion traps, possible paths for radiative charge exchange, photoassociation of a cold lithium or rubidium atom and a strontium ion are discussed, as well as the formation of stable molecular ions. (C) 2011 American Institute of Physics. [doi:10.1063/1.3611399] |
BibTeX:
@article{Aymar2011, author = {Aymar, M. and Guerout, R. and Dulieu, O.}, title = {Structure of the alkali-metal-atom plus strontium molecular ions: Towards photoassociation and formation of cold molecular ions}, journal = {JOURNAL OF CHEMICAL PHYSICS}, journal = {J. Chem. Phys.}, year = {2011}, volume = {135}, number = {6}, article-number = {064305}, doi = {10.1063/1.3611399}, language = {English}, unique-id = {ISI:000293955000015}, web-of-science-categories = {Physics, Atomic, Molecular & Chemical} } |
2011 A Canaguier-Durand, A Gerardin, R Guerout, PA Maia Neto, VV Nesvizhevsky, AY Voronin, A Lambrecht and S Reynaud "Casimir interaction between a dielectric nanosphere and a metallic plane" , Phys. Rev. A 83 032508 |
Abstract: We study the Casimir interaction between a dielectric nanosphere and a metallic plane, using the multiple scattering theory. Exact results are obtained with the dielectric described by a Sellmeier model and the metal by a Drude model. Asymptotic forms are discussed for small spheres and large or small distances. The well-known Casimir-Polder formula is recovered at the limit of vanishingly small spheres, while an expression that behaves better at small distances is found for any finite value of the radius. The exact results are of particular interest for the study of quantum states of nanospheres in the vicinity of surfaces. |
BibTeX:
@article{Canaguier-Durand2011, author = {Canaguier-Durand, Antoine and Gerardin, Antoine and Guerout, Romain and Maia Neto, Paulo A. and Nesvizhevsky, Valery V. and Voronin, Alexei Yu. and Lambrecht, Astrid and Reynaud, Serge}, title = {Casimir interaction between a dielectric nanosphere and a metallic plane}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2011}, volume = {83}, number = {3}, article-number = {032508}, doi = {10.1103/PhysRevA.83.032508}, language = {English}, unique-id = {ISI:000288781600003}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2011 A Canaguier-Durand, PA Maia Neto, A Lambrecht and S Reynaud "Thermal Casimir effect for Drude metals in the plane-sphere geometry (vol 82, 012511, 2010)" , Phys. Rev. A 83 039905 |
BibTeX:
@article{Canaguier-Durand2011a, author = {Canaguier-Durand, Antoine and Maia Neto, Paulo A. and Lambrecht, Astrid and Reynaud, Serge}, title = {Thermal Casimir effect for Drude metals in the plane-sphere geometry (vol 82, 012511, 2010)}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2011}, volume = {83}, number = {3}, article-number = {039905}, doi = {10.1103/PhysRevA.83.039905}, language = {English}, unique-id = {ISI:000288445700009}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2011 M-T Jaekel and S Reynaud "Mass, Inertia, and Gravitation" , In Mass and Motion in General Relativity. 162 491-530. |
Abstract: We discuss some effects induced by quantum field fluctuations on mass, inertia, and gravitation. Recalling the problem raised by vacuum field fluctuations with respect to inertia and gravitation, we show that vacuum energy differences, such as Casimir energy, do contribute to inertia. Mass behaves as a quantum observable and in particular possesses quantum fluctuations. We show that the compatibility of the quantum nature of mass with gravitation can be ensured by conformal symmetries, which allow one to formulate a quantum version of the equivalence principle. Finally, we consider some corrections to the coupling between metric fields and energy-momentum tensors induced by radiative corrections. Newton's gravitation constant is replaced by two different running coupling constants in the sectors of traceless and traced tensors. There result metric extensions of general relativity (GR), which can be characterized by modified Ricci curvatures or by two gravitation potentials. The corresponding phenomenological framework extends the usual parametrized post-Newtonian (PPN) one, with the ability to remain compatible with classical tests of gravity while accounting for new features, such as Pioneer-like anomalies or anomalous light deflection. |
BibTeX:
@inproceedings{Jaekel2011, author = {Jaekel, Marc-Thierry and Reynaud, Serge}, title = {Mass, Inertia, and Gravitation}, booktitle = {Mass and Motion in General Relativity}, year = {2011}, volume = {162}, pages = {491-530}, doi = {10.1007/978-90-481-3015-3\_18}, language = {English}, unique-id = {ISI:000313566200018}, web-of-science-categories = {Physics, Multidisciplinary} } |
2011 B Lamine, R Herve, MT Jaekel, A Lambrecht and S Reynaud "Large-scale EPR correlation and gravitational waves backgrounds" , EPL 95 20004 |
Abstract: We study how quantum correlations survive at large scales in spite of their exposition to stochastic backgrounds of gravitational waves. We consider Einstein-Podolski-Rosen (EPR) correlations built up on the polarizations of photon pairs and evaluate how they are affected by the cosmic gravitational wave background (CGWB). We evaluate the quantum decoherence of the EPR correlations in terms of a reduction of the violation of the Bell inequality as written by Clauser, Horne, Shimony and Holt (CHSH). We show that this decoherence remains small and that EPR correlations can in principle survive up to the largest cosmic scales. Copyright (C) EPLA, 2011 |
BibTeX:
@article{Lamine2011, author = {Lamine, B. and Herve, R. and Jaekel, M. -T. and Lambrecht, A. and Reynaud, S.}, title = {Large-scale EPR correlation and gravitational waves backgrounds}, journal = {EPL}, journal = {EPL}, year = {2011}, volume = {95}, number = {2}, article-number = {20004}, doi = {10.1209/0295-5075/95/20004}, language = {English}, unique-id = {ISI:000292384900004}, web-of-science-categories = {Physics, Multidisciplinary} } |
2011 B Lenoir, A Levy, B Foulon, B Lamine, B Christophe and S Reynaud "Electrostatic accelerometer with bias rejection for gravitation and Solar System physics" , Adv. Space Res. 48 1248-1257. |
Abstract: Radio tracking of interplanetary probes is an important tool for navigation purposes as well as for testing the laws of physics or exploring planetary environments. The addition of an accelerometer on board a spacecraft provides orbit determination specialists and physicists with an additional observable of great interest: it measures the value of the non-gravitational acceleration acting on the spacecraft, i.e. the departure of the probe from geodesic motion. This technology is now routinely used for geodesy missions in Earth orbits with electrostatic accelerometers. The present article proposes a technological evolution which consists in adding a subsystem to remove the measurement bias of an electrostatic accelerometer. It aims at enhancing the scientific return of interplanetary missions in the Solar System, from the point of view of fundamental physics as well as Solar System physics. The main part of the instrument is an electrostatic accelerometer called MicroSTAR, which inherits mature technologies based on Onera's experience in the field of accelerometry. This accelerometer is mounted on a rotating stage, called Bias Rejection System, which modulates the non-gravitational acceleration and thus permits to remove the measurement bias of the instrument from the signal of interest. The article presents the motivations of this study, describes the instrument, called GAP, and the measurement principle, and discusses the performance of the instrument as well as integration constraints. Within a total mass of 3.1 kg and an average consumption of 3 W, it is possible to reach an accuracy of 1 pm S-2 for the acceleration measured with an integration time of five hours. Combining this observable with the radio tracking data, it is therefore possible to compare the motion of the spacecraft to theoretical predictions with an accuracy improved by at least three orders of magnitude with respect to existing techniques. (C) 2011 COSPAR. Published by Elsevier Ltd. All rights reserved. |
BibTeX:
@article{Lenoir2011, author = {Lenoir, Benjamin and Levy, Agnes and Foulon, Bernard and Lamine, Brahim and Christophe, Bruno and Reynaud, Serge}, title = {Electrostatic accelerometer with bias rejection for gravitation and Solar System physics}, journal = {ADVANCES IN SPACE RESEARCH}, journal = {Adv. Space Res.}, year = {2011}, volume = {48}, number = {7}, pages = {1248-1257}, doi = {10.1016/j.asr.2011.06.005}, language = {English}, unique-id = {ISI:000295498200009}, web-of-science-categories = {Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences} } |
2011 G Torricelli, I Pirozhenko, S Thornton, A Lambrecht and C Binns "Casimir force between a metal and a semimetal" , EPL 93 51001 |
Abstract: We present here measurements of the Casimir force gradient in the 60-300nm range using a commercial Atomic Force Microscope operating in Ultra High Vacuum (UHV). The measurements were carried out in the sphere-plate geometry between a Au sphere and plates consisting of two different classes of material, that is a metal (Au) and a semimetal (HOPG). The variation in the optical properties of the materials produces clearly observed differences in the Casimir force as predicted by calculations based on the quantum theory of optical networks and the Lifshitz theory. Copyright (c) EPLA, 2011 |
BibTeX:
@article{Torricelli2011, author = {Torricelli, G. and Pirozhenko, I. and Thornton, S. and Lambrecht, A. and Binns, C.}, title = {Casimir force between a metal and a semimetal}, journal = {EPL}, journal = {EPL}, year = {2011}, volume = {93}, number = {5}, article-number = {51001}, doi = {10.1209/0295-5075/93/51001}, language = {English}, unique-id = {ISI:000288322900005}, web-of-science-categories = {Physics, Multidisciplinary} } |
2011 P Wolf, L Blanchet, CJ Borde, S Reynaud, C Salomon and C Cohen-Tannoudji "Does an atom interferometer test the gravitational redshift at the Compton frequency?" , Class. Quantum Gravity 28 145017 |
Abstract: Atom interferometers allow the measurement of the acceleration of freely falling atoms with respect to an experimental platform at rest on Earth's surface. Such experiments have been used to test the universality of free fall by comparing the acceleration of the atoms to that of a classical freely falling object. In a recent paper, Muller et al (2010 Nature 463 926-9) argued that atom interferometers also provide a very accurate test of the gravitational redshift (or universality of clock rates). Considering the atom as a clock operating at the Compton frequency associated with the rest mass, they claimed that the interferometer measures the gravitational redshift between the atom-clocks in the two paths of the interferometer at different values of gravitational potentials. In this paper, we analyze this claim in the frame of general relativity and of different alternative theories. We show that the difference of `Compton phases' between the two paths of the interferometer is actually zero in a large class of theories, including general relativity, all metric theories of gravity, most non-metric theories and most theoretical frameworks used to interpret the violations of the equivalence principle. Therefore, in most plausible theoretical frameworks, there is no redshift effect and atom interferometers only test the universality of free fall. We also show that frameworks in which atom interferometers would test the redshift pose serious problems, such as (i) violation of the Schiff conjecture, (ii) violation of the Feynman path integral formulation of quantum mechanics and of the principle of least action for matter waves, (iii) violation of energy conservation, and more generally (iv) violation of the particle-wave duality in quantum mechanics. Standard quantum mechanics is no longer valid in such frameworks, so that a consistent interpretation of the experiment would require an alternative formulation of quantum mechanics. As such an alternative has not been proposed to date, we conclude that the interpretation of atom interferometers as testing the gravitational redshift at the Compton frequency is unsound. |
BibTeX:
@article{Wolf2011, author = {Wolf, Peter and Blanchet, Luc and Borde, Christian J. and Reynaud, Serge and Salomon, Christophe and Cohen-Tannoudji, Claude}, title = {Does an atom interferometer test the gravitational redshift at the Compton frequency?}, journal = {CLASSICAL AND QUANTUM GRAVITY}, journal = {Class. Quantum Gravity}, year = {2011}, volume = {28}, number = {14}, article-number = {145017}, doi = {10.1088/0264-9381/28/14/145017}, language = {English}, unique-id = {ISI:000291789300017}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Particles & Fields} } |
2011 P Wolf, L Blanchet, CJ Borde, S Reynaud, C Salomon and C Cohen-Tannoudji "Testing the Gravitational Redshift with Atomic Gravimeters?" , In International Frequency Control Symposium/european Frequency and Time Forum. 1012-1016. |
Abstract: Atom interferometers allow the measurement of the acceleration of freely falling atoms with respect to an experimental platform at rest on Earth's surface. Such experiments have been used to test the universality of free fall by comparing the acceleration of the atoms to that of a classical freely falling object. In a recent paper, Muller, Peters and Chu [Nature 463, 926-929 (2010)] argued that atom interferometers also provide a very accurate test of the gravitational redshift (or universality of clock rates). Considering the atom as a clock operating at the Compton frequency associated with the rest mass, they claimed that the interferometer measures the gravitational redshift between the atom-clocks in the two paths of the interferometer at different values of gravitational potentials. In the present paper we analyze this claim in the frame of general relativity and of different alternative theories, and conclude that the interpretation of atom interferometers as testing the gravitational redshift at the Compton frequency is unsound. The present work is a summary of our extensive paper [Wolf et al., arXiv:1012.1194, Class. Quant. Grav. in press], to which the reader is referred for more details. |
BibTeX:
@inproceedings{Wolf2011a, author = {Wolf, Peter and Blanchet, Luc and Borde, Christian J. and Reynaud, Serge and Salomon, Christophe and Cohen-Tannoudji, Claude}, title = {Testing the Gravitational Redshift with Atomic Gravimeters?}, booktitle = {International Frequency Control Symposium/european Frequency and Time Forum}, year = {2011}, pages = {1012-1016}, language = {English}, unique-id = {ISI:000295261600228}, web-of-science-categories = {Engineering, Electrical & Electronic; Physics, Applied; Telecommunications} } |
2010 M Ayouz, O Dulieu, R Guerout, J Robert and V Kokoouline "Potential energy and dipole moment surfaces of H-3(-) molecule" , J. Chem. Phys. 132 194309 |
Abstract: A new potential energy surface for the electronic ground state of the simplest triatomic anion H-3(-) is determined for a large number of geometries. Its accuracy is improved at short and large distances compared to previous studies. The permanent dipole moment surface of the state is also computed for the first time. Nine vibrational levels of H-3(-) and 14 levels of D-3(-) are obtained, bound by at most similar to 70 and similar to 126 cm(-1), respectively. These results should guide the spectroscopic search of the H-3(-) ion in cold gases (below 100K) of molecular hydrogen in the presence of H- ions. (C) 2010 American Institute of Physics. [doi:10.1063/1.3424847] |
BibTeX:
@article{Ayouz2010, author = {Ayouz, M. and Dulieu, O. and Guerout, R. and Robert, J. and Kokoouline, V.}, title = {Potential energy and dipole moment surfaces of H-3(-) molecule}, journal = {JOURNAL OF CHEMICAL PHYSICS}, journal = {J. Chem. Phys.}, year = {2010}, volume = {132}, number = {19}, article-number = {194309}, doi = {10.1063/1.3424847}, language = {English}, unique-id = {ISI:000277970100022}, web-of-science-categories = {Physics, Atomic, Molecular & Chemical} } |
2010 Y Bao, R Guerout, J Lussange, A Lambrecht, RA Cirelli, F Klemens, WM Mansfield, CS Pai and HB Chan "Casimir Force on a Surface with Shallow Nanoscale Corrugations: Geometry and Finite Conductivity Effects" , Phys. Rev. Lett. 105 250402 |
Abstract: We measure the Casimir force between a gold sphere and a silicon plate with nanoscale, rectangular corrugations with a depth comparable to the separation between the surfaces. In the proximity force approximation (PFA), both the top and bottom surfaces of the corrugations contribute to the force, leading to a distance dependence that is distinct from a flat surface. The measured Casimir force is found to deviate from the PFA by up to 10 in good agreement with calculations based on scattering theory that includes both geometry effects and the optical properties of the material. |
BibTeX:
@article{Bao2010, author = {Bao, Y. and Guerout, R. and Lussange, J. and Lambrecht, A. and Cirelli, R. A. and Klemens, F. and Mansfield, W. M. and Pai, C. S. and Chan, H. B.}, title = {Casimir Force on a Surface with Shallow Nanoscale Corrugations: Geometry and Finite Conductivity Effects}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2010}, volume = {105}, number = {25}, article-number = {250402}, doi = {10.1103/PhysRevLett.105.250402}, language = {English}, unique-id = {ISI:000286752100001}, web-of-science-categories = {Physics, Multidisciplinary} } |
2010 A Canaguier-Durand, PA Maia Neto, A Lambrecht and S Reynaud "Thermal Casimir Effect in the Plane-Sphere Geometry" , Phys. Rev. Lett. 104 040403 |
Abstract: The thermal Casimir force between two metallic plates is known to depend on the description of material properties. For large separations the dissipative Drude model leads to a force a factor of 2 smaller than the lossless plasma model. Here we show that the plane-sphere geometry, in which current experiments are performed, decreases this ratio to a factor of 3/2, as revealed by exact numerical and large-distance analytical calculations. For perfect reflectors, we find a repulsive contribution of thermal photons to the force and negative entropy values at intermediate distances. |
BibTeX:
@article{Canaguier-Durand2010, author = {Canaguier-Durand, Antoine and Maia Neto, Paulo A. and Lambrecht, Astrid and Reynaud, Serge}, title = {Thermal Casimir Effect in the Plane-Sphere Geometry}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2010}, volume = {104}, number = {4}, article-number = {040403}, doi = {10.1103/PhysRevLett.104.040403}, language = {English}, unique-id = {ISI:000274336600003}, web-of-science-categories = {Physics, Multidisciplinary} } |
2010 A Canaguier-Durand, PAM Neto, A Lambrecht and S Reynaud "Thermal Casimir effect for Drude metals in the plane-sphere geometry" , Phys. Rev. A 82 012511 |
Abstract: We compute the Casimir interaction between a plane and a sphere, the configuration employed in the most precise experiments. The scattering formula is developed by taking a suitably chosen plane-wave and multipole basis and is valid for arbitrary values of the sphere radius, interplate distance, temperature, and arbitrary dielectric functions for both sphere and plate. Our analytical and numerical results for metallic surfaces show a nontrivial interplay between the effects of curvature, temperature, finite conductivity, and dissipation. |
BibTeX:
@article{Canaguier-Durand2010a, author = {Canaguier-Durand, Antoine and Neto, Paulo A. Maia and Lambrecht, Astrid and Reynaud, Serge}, title = {Thermal Casimir effect for Drude metals in the plane-sphere geometry}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2010}, volume = {82}, number = {1}, article-number = {012511}, doi = {10.1103/PhysRevA.82.012511}, language = {English}, unique-id = {ISI:000280450800006}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2010 AM Contreras-Reyes, R Guerout, PA Maia Neto, DAR Dalvit, A Lambrecht and S Reynaud "Casimir-Polder interaction between an atom and a dielectric grating" , Phys. Rev. A 82 052517 |
Abstract: We develop the scattering approach to calculate the exact dispersive Casimir-Polder potential between a ground-state atom and a rectangular grating. Our formalism allows, in principle, for arbitrary values of the grating amplitude and period, and of the atom-grating distance. We compute numerically the potential for a Rb atom on top of a Si grating and compare the results with the potential for a flat surface taken at the local atom-surface distance (proximity force approximation). Except for very short separation distances, the potential is nearly sinusoidal along the direction transverse to the grooves. |
BibTeX:
@article{Contreras-Reyes2010, author = {Contreras-Reyes, Ana M. and Guerout, Romain and Maia Neto, Paulo A. and Dalvit, Diego A. R. and Lambrecht, Astrid and Reynaud, Serge}, title = {Casimir-Polder interaction between an atom and a dielectric grating}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2010}, volume = {82}, number = {5}, article-number = {052517}, doi = {10.1103/PhysRevA.82.052517}, language = {English}, unique-id = {ISI:000284460400003}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2010 J-M Courty, A Levy, B Christophe and S Reynaud "Simulation of Ambiguity Effects in Doppler Tracking of Pioneer Probes" , Space Sci. Rev. 151 93-103. |
Abstract: Various models have been proposed to interpret the anomalous Pioneer Doppler data. We present in this paper a simulation tool aiming at determining signatures that could be searched in the data reduction process in order to discriminate between these different explanations. We discuss preliminary results on the seasonally modulated anomalies and compare two interpretations corresponding to a constant anomalous acceleration on one hand, to an anomalous curvature in the second sector of the gravity law on the other hand. Though the second sector interpretation could naturally induce large modulated anomalies, the adjustment of the initial conditions partly compensate these modulations and thus produces a signature resembling that of a constant acceleration. The difference between the predictions of the two interpretations is in fact close to the rms level of the residuals after the data analysis. |
BibTeX:
@article{Courty2010, author = {Courty, Jean-Michel and Levy, Agnes and Christophe, Bruno and Reynaud, Serge}, title = {Simulation of Ambiguity Effects in Doppler Tracking of Pioneer Probes}, journal = {SPACE SCIENCE REVIEWS}, journal = {Space Sci. Rev.}, year = {2010}, volume = {151}, number = {1-3}, pages = {93-103}, doi = {10.1007/s11214-009-9590-x}, language = {English}, unique-id = {ISI:000276233200008}, web-of-science-categories = {Astronomy & Astrophysics} } |
2010 FX Dezael and A Lambrecht "Analogue Casimir radiation using an optical parametric oscillator" , EPL 89 14001 |
Abstract: We establish an explicit analogy between the dynamical Casimir effect and the photon emission of a thin non-linear crystal pumped inside a cavity. This allows us to propose a system based on a type-I optical parametric oscillator (OPO) to simulate a cavity oscillating in vacuum at optical frequencies. The resulting photon flux is expected to be more easily detectable than with a mechanical excitation of the mirrors. We conclude by comparing different theoretical predictions and suggest that our experimental proposal could help discriminate between them. Copyright (C) EPLA, 2010 |
BibTeX:
@article{Dezael2010, author = {Dezael, F. X. and Lambrecht, A.}, title = {Analogue Casimir radiation using an optical parametric oscillator}, journal = {EPL}, journal = {EPL}, year = {2010}, volume = {89}, number = {1}, article-number = {14001}, doi = {10.1209/0295-5075/89/14001}, language = {English}, unique-id = {ISI:000273855100017}, web-of-science-categories = {Physics, Multidisciplinary} } |
2010 R Guerout, M Aymar and O Dulieu "Ground state of the polar alkali-metal-atom-strontium molecules: Potential energy curve and permanent dipole moment" , Phys. Rev. A 82 042508 |
Abstract: In this study, we investigate the structure of the polar alkali-metal-atom-strontium diatomic molecules as possible candidates for the realization of samples of ultracold polar molecular species not yet investigated experimentally. Using a quantum chemistry approach based on effective core potentials and core polarization potentials, we model these systems as effective three-valence-electron systems, allowing for calculation of electronic properties with full configuration interaction. The potential curve and the permanent dipole moment of the (2)Sigma(+) ground state are determined as functions of the internuclear distance for LiSr, NaSr, KSr, RbSr, and CsSr molecules. These molecules are found to exhibit a significant permanent dipole moment, though smaller than those of the alkali-metal-atom-Rb molecules. |
BibTeX:
@article{Guerout2010, author = {Guerout, R. and Aymar, M. and Dulieu, O.}, title = {Ground state of the polar alkali-metal-atom-strontium molecules: Potential energy curve and permanent dipole moment}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2010}, volume = {82}, number = {4}, article-number = {042508}, doi = {10.1103/PhysRevA.82.042508}, language = {English}, unique-id = {ISI:000283044400003}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2010 F Impens, AM Contreras-Reyes, PA Maia Neto, DAR Dalvit, R Guerout, A Lambrecht and S Reynaud "Driving quantized vortices with quantum vacuum fluctuations" , EPL 92 40010 |
Abstract: We propose to use a rotating corrugated material plate in order to stir, through the Casimir-Polder interaction, quantized vortices in an harmonically trapped Bose-Einstein condensate. The emergence of such vortices within the condensate cannot be explained with a computation of the Casimir-Polder potential based on the pairwise summation approach or on the proximity force approximation. It thus appears as a genuine signature of non-trivial geometry effects on the electromagnetic vacuum fluctuations, which fully exploits the superfluid nature of the sample. In order to discuss quantitatively the generation of Casimir-driven vortices, we derive an exact non-perturbative theory of the Casimir-Polder potential felt by the atoms in front of the grating. Our numerical results for a Rb condensate close to a Si grating show that the resulting quantum vacuum torque is strong enough to provide a contactless transfer of angular momentum to the condensate and generate quantized vortices under realistic experimental conditions at separation distances around 3 mu m. Copyright (C) EPLA, 2010 |
BibTeX:
@article{Impens2010, author = {Impens, F. and Contreras-Reyes, A. M. and Maia Neto, P. A. and Dalvit, D. A. R. and Guerout, R. and Lambrecht, A. and Reynaud, S.}, title = {Driving quantized vortices with quantum vacuum fluctuations}, journal = {EPL}, journal = {EPL}, year = {2010}, volume = {92}, number = {4}, article-number = {40010}, doi = {10.1209/0295-5075/92/40010}, language = {English}, unique-id = {ISI:000285455400010}, web-of-science-categories = {Physics, Multidisciplinary} } |
2010 A Levy, B Christophe, G Metris, P Berio, J-M Courty and S Reynaud "ODYSSEY, Orbit Determination Software for the Pioneer Data Analysis" , Space Sci. Rev. 151 105-121. |
Abstract: The Pioneer anomaly refers to the difference between the computed trajectories of the Pioneer 10 and 11 spacecrafts and their actual trajectories as observed through Doppler tracking. This difference has been described by the Jet Propulsion Laboratory (JPL) as a constant anomalous acceleration. In order to perform an independent analysis, specific trajectography software, named ODYSSEY, has been developed. The paper will focus on the models implemented in this software and on the results obtained. The existence of a constant anomalous acceleration is confirmed with properties similar to those reported by JPL. Time dependent components of the anomaly are also found and discussed. |
BibTeX:
@article{Levy2010, author = {Levy, Agnes and Christophe, Bruno and Metris, Gilles and Berio, Philippe and Courty, Jean-Michel and Reynaud, Serge}, title = {ODYSSEY, Orbit Determination Software for the Pioneer Data Analysis}, journal = {SPACE SCIENCE REVIEWS}, journal = {Space Sci. Rev.}, year = {2010}, volume = {151}, number = {1-3}, pages = {105-121}, doi = {10.1007/s11214-009-9596-4}, language = {English}, unique-id = {ISI:000276233200009}, web-of-science-categories = {Astronomy & Astrophysics} } |
2010 GA Moreno, R Messina, DAR Dalvit, A Lambrecht, PA Maia Neto and S Reynaud "Disorder in Quantum Vacuum: Casimir-Induced Localization of Matter Waves" , Phys. Rev. Lett. 105 210401 |
Abstract: Disordered geometrical boundaries such as rough surfaces induce important modifications to the mode spectrum of the electromagnetic quantum vacuum. In analogy to Anderson localization of waves induced by a random potential, here we show that the Casimir-Polder interaction between a cold atomic sample and a rough surface also produces localization phenomena. These effects, that represent a macroscopic manifestation of disorder in quantum vacuum, should be observable with Bose-Einstein condensates expanding in proximity of rough surfaces. |
BibTeX:
@article{Moreno2010, author = {Moreno, G. A. and Messina, R. and Dalvit, D. A. R. and Lambrecht, A. and Maia Neto, P. A. and Reynaud, S.}, title = {Disorder in Quantum Vacuum: Casimir-Induced Localization of Matter Waves}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2010}, volume = {105}, number = {21}, article-number = {210401}, doi = {10.1103/PhysRevLett.105.210401}, language = {English}, unique-id = {ISI:000284208800001}, web-of-science-categories = {Physics, Multidisciplinary} } |
2010 S Reynaud, A Canaguier-Durand, R Messina, A Lambrecht and PA Maia Neto "The scattering approach to the Casimir force" , Int. J. Mod. Phys. A 25 2201-2211. |
Abstract: We present the scattering approach which is nowadays the best tool for describing the Casimir force in realistic experimental configurations. After reminders on the simple geo metries of 1d space and specular scatterers in 3d space, we discuss the case of stationary arbitrarily shaped mirrors in electromagnetic vacuum. We then review specific calculat ions based on the scattering approach, dealing for example with the forces or torques between nanostructured surfaces and with the force between a plane and a sphere. In these various cases, we account for the material dependence of the forces, and show that the geometry dependence goes beyond the trivial Proximity Force Approximation often used for discussing experiments. |
BibTeX:
@article{Reynaud2010, author = {Reynaud, S. and Canaguier-Durand, A. and Messina, R. and Lambrecht, A. and Maia Neto, P. A.}, title = {The scattering approach to the Casimir force}, journal = {INTERNATIONAL JOURNAL OF MODERN PHYSICS A}, journal = {Int. J. Mod. Phys. A}, year = {2010}, volume = {25}, number = {11}, pages = {2201-2211}, doi = {10.1142/S0217751X10049475}, language = {English}, unique-id = {ISI:000277614500004}, web-of-science-categories = {Physics, Nuclear; Physics, Particles & Fields} } |
2010 L Rosa and A Lambrecht "Repulsive Casimir force: Sufficient conditions" , Phys. Rev. D 82 065025 |
Abstract: In this paper the Casimir energy of two parallel plates made by materials of different penetration depth and no medium in between is derived. We study the Casimir force density and derive analytical constraints on the two penetration depths which are sufficient conditions to ensure repulsion. Compared to other methods our approach needs no specific model for dielectric or magnetic material properties and constitutes a complementary analysis. |
BibTeX:
@article{Rosa2010, author = {Rosa, Luigi and Lambrecht, Astrid}, title = {Repulsive Casimir force: Sufficient conditions}, journal = {PHYSICAL REVIEW D}, journal = {Phys. Rev. D}, year = {2010}, volume = {82}, number = {6}, article-number = {065025}, doi = {10.1103/PhysRevD.82.065025}, language = {English}, unique-id = {ISI:000282172600004}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Particles & Fields} } |
2010 G Torricelli, S Thornton, C Binns, I Pirozhenko and A Lambrecht "Measurement of the Casimir effect under ultrahigh vacuum: Calibration method" , J. Vac. Sci. Technol. B 28 |
Abstract: In this article, the authors present a strategy to measure the Casimir effect with an atomic force microscopy in an ultrahigh vacuum system. The key parameters including the absolute distance, the contact potential difference, and the calibration factor of the probe are determined by electrostatic interaction without contact. The strategy has been developed with the main purpose of performing a reliable relative measurement, that is, comparison of the Casimir force between different surfaces. As an example of the method, the authors estimate the accuracy and the precision of measurements performed on a Au sample. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3322734] |
BibTeX:
@article{Torricelli2010, author = {Torricelli, Gauthier and Thornton, Stuart and Binns, Chris and Pirozhenko, Irina and Lambrecht, Astrid}, title = {Measurement of the Casimir effect under ultrahigh vacuum: Calibration method}, journal = {JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B}, journal = {J. Vac. Sci. Technol. B}, year = {2010}, volume = {28}, number = {3}, doi = {10.1116/1.3322734}, language = {English}, unique-id = {ISI:000278182700092}, web-of-science-categories = {Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied} } |
2010 P Wolf, L Blanchet, CJ Borde, S Reynaud, C Salomon and C Cohen-Tannoudji "Atom gravimeters and gravitational redshift" , Nature 467 E1. |
BibTeX:
@article{Wolf2010, author = {Wolf, Peter and Blanchet, Luc and Borde, Christian J. and Reynaud, Serge and Salomon, Christophe and Cohen-Tannoudji, Claude}, title = {Atom gravimeters and gravitational redshift}, journal = {NATURE}, journal = {Nature}, year = {2010}, volume = {467}, number = {7311}, pages = {E1}, doi = {10.1038/nature09340}, language = {English}, unique-id = {ISI:000281461200028}, web-of-science-categories = {Multidisciplinary Sciences} } |
2010 P Wolf, C Salomon and S Reynaud "Space clocks to test relativiy: ACES and SAGAS" , IAU Symposium Proc. Series , In Relativity in fundamental astronomy. 5 377-389. |
Abstract: Atomic clocks are an outstanding tool for the experimental verification of general relativity and more generally for fundamental astronomy (VLBI, pulsar timing, navigation, etc). Recent years have seen a rapid improvement in the performance of such clocks, promising new improved tests of relativity, in particular onboard terrestrial and interplanetary space missions. We present the scientific motivations of such tests taking the ACES Salomon et al. (2001) and SAGAS Wolf et al. (2009) projects as particular examples. |
BibTeX:
@inproceedings{Wolf2010a, author = {Wolf, Peter and Salomon, Christophe and Reynaud, Serge}, title = {Space clocks to test relativiy: ACES and SAGAS}, booktitle = {Relativity in fundamental astronomy}, journal = {IAU Symposium Proc. Series}, year = {2010}, volume = {5}, number = {261}, pages = {377-389}, doi = {10.1017/S1743921309990676}, language = {English}, unique-id = {ISI:000280569700061}, web-of-science-categories = {Astronomy & Astrophysics} } |
2009 G Amelino-Camelia, K Aplin, M Arndt, JD Barrow, RJ Bingham, C Borde, P Bouyer, M Caldwell, AM Cruise, T Damour, P D'Arrigo, H Dittus, W Ertmer, B Foulon, P Gill, GD Hammond, J Hough, C Jentsch, U Johann, P Jetzer, H Klein, A Lambrecht, B Lamine, C Laemmerzahl, N Lockerbie, F Loeffler, JT Mendonca, J Mester, WT Ni, C Pegrum, A Peters, E Rasel, S Reynaud, D Shaul, TJ Sumner, S Theil, C Torrie, P Touboul, C Trenkel, S Vitale, W Vodel, C Wang, H Ward and A Woodgate "GAUGE: the GrAnd Unification and Gravity Explorer" , Exp. Astron. 23 549-572. |
Abstract: The GAUGE (GrAnd Unification and Gravity Explorer) mission proposes to use a drag-free spacecraft platform onto which a number of experiments are attached. They are designed to address a number of key issues at the interface between gravity and unification with the other forces of nature. The equivalence principle is to be probed with both a high-precision test using classical macroscopic test bodies, and, to lower precision, using microscopic test bodies via cold-atom interferometry. These two equivalence principle tests will explore string-dilaton theories and the effect of space-time fluctuations respectively. The macroscopic test bodies will also be used for intermediate-range inverse-square law and an axion-like spin-coupling search. The microscopic test bodies offer the prospect of extending the range of tests to also include short-range inverse-square law and spin-coupling measurements as well as looking for evidence of quantum decoherence due to space-time fluctuations at the Planck scale. |
BibTeX:
@article{Amelino-Camelia2009, author = {Amelino-Camelia, G. and Aplin, K. and Arndt, M. and Barrow, J. D. and Bingham, R. J. and Borde, C. and Bouyer, P. and Caldwell, M. and Cruise, A. M. and Damour, T. and D'Arrigo, P. and Dittus, H. and Ertmer, W. and Foulon, B. and Gill, P. and Hammond, G. D. and Hough, J. and Jentsch, C. and Johann, U. and Jetzer, P. and Klein, H. and Lambrecht, A. and Lamine, B. and Laemmerzahl, C. and Lockerbie, N. and Loeffler, F. and Mendonca, J. T. and Mester, J. and Ni, W. -T. and Pegrum, C. and Peters, A. and Rasel, E. and Reynaud, S. and Shaul, D. and Sumner, T. J. and Theil, S. and Torrie, C. and Touboul, P. and Trenkel, C. and Vitale, S. and Vodel, W. and Wang, C. and Ward, H. and Woodgate, A.}, title = {GAUGE: the GrAnd Unification and Gravity Explorer}, journal = {EXPERIMENTAL ASTRONOMY}, journal = {Exp. Astron.}, year = {2009}, volume = {23}, number = {2}, pages = {549-572}, doi = {10.1007/s10686-008-9086-9}, language = {English}, unique-id = {ISI:000263505600003}, web-of-science-categories = {Astronomy & Astrophysics} } |
2009 M Aymar, R Guerout, M Sahlaoui and O Dulieu "Electronic structure of the magnesium hydride molecular ion" , J. Phys. B-At. Mol. Opt. Phys. 42 154025 |
Abstract: In this paper, using a standard quantum chemistry approach based on pseudopotentials for atomic core representation, Gaussian basis sets and effective core polarization potentials, we investigate the electronic properties of the MgH(+) ion. We first determine potential energy curves for several states using different basis sets and discuss their predicted accuracy by comparing our values of the well depths and position with other available results. We then calculate permanent and transition dipole moments for several transitions. Finally, for the first time, we calculate the static dipole polarizability of MgH(+) as a function of the interatomic distance. This study represents the first step towards the modelling of collisions between trapped cold Mg(+) ions and H(2) molecules. |
BibTeX:
@article{Aymar2009, author = {Aymar, M. and Guerout, R. and Sahlaoui, M. and Dulieu, O.}, title = {Electronic structure of the magnesium hydride molecular ion}, journal = {JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS}, journal = {J. Phys. B-At. Mol. Opt. Phys.}, year = {2009}, volume = {42}, number = {15}, article-number = {154025}, doi = {10.1088/0953-4075/42/15/154025}, language = {English}, unique-id = {ISI:000268043300026}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2009 A Canaguier-Durand, PA Maia Neto, I Cavero-Pelaez, A Lambrecht and S Reynaud "Casimir Interaction between Plane and Spherical Metallic Surfaces" , Phys. Rev. Lett. 102 230404 |
Abstract: We give an exact series expansion of the Casimir force between plane and spherical metallic surfaces in the nontrivial situation where the sphere radius R, the plane-sphere distance L and the plasma wavelength lambda(P) have arbitrary relative values. We then present numerical evaluation of this expansion for not too small values of L/R. For metallic nanospheres where R, L and lambda(P) have comparable values, we interpret our results in terms of a correlation between the effects of geometry beyond the proximity force approximation and of finite reflectivity due to material properties. We also discuss the interest of our results for the current Casimir experiments which are performed with spheres of large radius R >> L. |
BibTeX:
@article{Canaguier-Durand2009, author = {Canaguier-Durand, Antoine and Maia Neto, Paulo A. and Cavero-Pelaez, Ines and Lambrecht, Astrid and Reynaud, Serge}, title = {Casimir Interaction between Plane and Spherical Metallic Surfaces}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2009}, volume = {102}, number = {23}, article-number = {230404}, doi = {10.1103/PhysRevLett.102.230404}, language = {English}, unique-id = {ISI:000266977500004}, web-of-science-categories = {Physics, Multidisciplinary} } |
2009 B Christophe, PH Andersen, JD Anderson, S Asmar, P Berio, O Bertolami, R Bingham, F Bondu, P Bouyer, S Bremer, JM Courty, H Dittus, B Foulon, P Gil, U Johann, JF Jordan, B Kent, C Laemmerzahl, A Levy, G Metris, O Olsen, J Paramos, JD Prestage, SV Progrebenko, E Rasel, A Rathke, S Reynaud, B Rievers, E Samain, TJ Sumner, S Theil, P Touboul, S Turyshev, P Vrancken, P Wolf and N Yu "Odyssey: a solar system mission" , Exp. Astron. 23 529-547. |
Abstract: The Solar System Odyssey mission uses modern-day high-precision experimental techniques to test the laws of fundamental physics which determine dynamics in the solar system. It could lead to major discoveries by using demonstrated technologies and could be flown within the Cosmic Vision time frame. The mission proposes to perform a set of precision gravitation experiments from the vicinity of Earth to the outer Solar System. Its scientific objectives can be summarized as follows: (1) test of the gravity force law in the Solar System up to and beyond the orbit of Saturn; (2) precise investigation of navigation anomalies at the fly-bys; (3) measurement of Eddington's parameter at occultations; (4) mapping of gravity field in the outer solar system and study of the Kuiper belt. To this aim, the Odyssey mission is built up on a main spacecraft, designed to fly up to 13 AU, with the following components: (a) a high-precision accelerometer, with bias-rejection system, measuring the deviation of the trajectory from the geodesics, that is also giving gravitational forces; (b) Ka-band transponders, as for Cassini, for a precise range and Doppler measurement up to 13 AU, with additional VLBI equipment; (c) optional laser equipment, which would allow one to improve the range and Doppler measurement, resulting in particular in an improved measurement (with respect to Cassini) of the Eddington's parameter. In this baseline concept, the main spacecraft is designed to operate beyond the Saturn orbit, up to 13 AU. It experiences multiple planetary fly-bys at Earth, Mars or Venus, and Jupiter. The cruise and fly-by phases allow the mission to achieve its baseline scientific objectives [(1) to (3) in the above list]. In addition to this baseline concept, the Odyssey mission proposes the release of the Enigma radio-beacon at Saturn, allowing one to extend the deep space gravity test up to at least 50 AU, while achieving the scientific objective of a mapping of gravity field in the outer Solar System [(4) in the above list]. |
BibTeX:
@article{Christophe2009, author = {Christophe, B. and Andersen, P. H. and Anderson, J. D. and Asmar, S. and Berio, Ph. and Bertolami, O. and Bingham, R. and Bondu, F. and Bouyer, Ph. and Bremer, S. and Courty, J. -M. and Dittus, H. and Foulon, B. and Gil, P. and Johann, U. and Jordan, J. F. and Kent, B. and Laemmerzahl, C. and Levy, A. and Metris, G. and Olsen, O. and Paramos, J. and Prestage, J. D. and Progrebenko, S. V. and Rasel, E. and Rathke, A. and Reynaud, S. and Rievers, B. and Samain, E. and Sumner, T. J. and Theil, S. and Touboul, P. and Turyshev, S. and Vrancken, P. and Wolf, P. and Yu, N.}, title = {Odyssey: a solar system mission}, journal = {EXPERIMENTAL ASTRONOMY}, journal = {Exp. Astron.}, year = {2009}, volume = {23}, number = {2}, pages = {529-547}, doi = {10.1007/s10686-008-9084-y}, language = {English}, unique-id = {ISI:000263505600002}, web-of-science-categories = {Astronomy & Astrophysics} } |
2009 FP Dos Santos, P Wolf, A Landragin, MC Angonin, P Lemonde, S Bize, A Clairon, A Lambrecht, B Lamine and S Reynaud "Measurement of short range forces using cold atoms" , In Frequency standards and metrology. 44-52. |
Abstract: We describe the new project FORCA-G, which aims at studying the short range interactions between a surface and atoms trapped in its vicinity. Using cold atoms confined in the wells of an optical standing wave, the atom-surface potential will be measured with high sensitivity using atom interferometry techniques. The experiment will allow a test of gravity at short distances, which will put stringent bounds on a possible deviation from the known laws of physics. FORCA-G will also allow a measurement of the Casimir Polder interaction (QED vacuum fluctuations) with unprecedented accuracy. |
BibTeX:
@inproceedings{DosSantos2009, author = {Dos Santos, F. Pereira and Wolf, P. and Landragin, A. and Angonin, M. -C. and Lemonde, P. and Bize, S. and Clairon, A. and Lambrecht, A. and Lamine, B. and Reynaud, S.}, title = {Measurement of short range forces using cold atoms}, booktitle = {Frequency standards and metrology}, year = {2009}, pages = {44-52}, language = {English}, unique-id = {ISI:000270540200004}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2009 W Ertmer, C Schubert, T Wendrich, M Gilowski, M Zaiser, T v. Zoest, E Rasel, CJ Borde, A Clairon, P Laurent, P Lemonde, G Santarelli, W Schleich, FS Cataliotti, M Inguscio, N Poli, F Sorrentino, C Modugno, GM Tino, P Gill, H Klein, H Margolis, S Reynaud, C Salomon, A Lambrecht, E Peik, C Jentsch, U Johann, A Rathke, P Bouyer, L Cacciapuoti, P De Natale, B Christophe, B Foulon, P Touboul, L Maleki, N Yu, SG Turyshev, JD Anderson, F Schmidt-Kaler, R Walser, J Vigue, M Buechner, MC Angonin, P Delva, P Tourrenc, R Bingham, B Kent, A Wicht, LJ Wang, K Bongs, H Dittus, C Laemmerzahl, S Theil, K Sengstock, A Peters, T Mueller, M Arndt, L Iess, F Bondu, A Brillet, E Samain, ML Chiofalo, F Levi and D Calonico "Matter wave explorer of gravity (MWXG)" , Exp. Astron. 23 611-649. |
Abstract: In response to ESA's Call for proposals of 5 March 2007 of the COSMIC VISION 2015-2025 plan of the ESA science programme, we propose a M-class satellite mission to test of the Equivalence Principle in the quantum domain by investigating the extended free fall of matter waves instead of macroscopic bodies as in the case of GAUGE, MICROSCOPE or STEP. The satellite, called MatterWave Explorer of Gravity, will carry an experiment to test gravity, namely the measurement of the equal rate of free fall with various isotopes of distinct atomic species with precision cold atom interferometry in the vicinity of the earth. This will allow for a first quantum test the Equivalence Principle with spin polarised particles and with pure fermionic and bosonic atomic ensembles. Due to the space conditions, the free fall of Rubidium and Potassium isotopes will be compared with a maximum accelerational sensitivity of 5 center dot 10 (-aEuro parts per thousand 16) m/s(2) corresponding to an accuracy of the test of the Equivalence Principle of 1 part in 10(16). Besides the primary scientific goal, the quantum test of the Equivalence Principle, the mission can be extended to provide additional information about the gravitational field of the earth or for testing theories of fundamental processes of decoherence which are investigated by various theory groups in the context of quantum gravity phenomenology. In this proposal we present in detail the mission objectives and the technical aspects of the proposed mission. |
BibTeX:
@article{Ertmer2009, author = {Ertmer, W. and Schubert, C. and Wendrich, T. and Gilowski, M. and Zaiser, M. and v. Zoest, T. and Rasel, E. and Borde, Ch. J. and Clairon, A. and Laurent, P. and Lemonde, P. and Santarelli, G. and Schleich, W. and Cataliotti, F. S. and Inguscio, M. and Poli, N. and Sorrentino, F. and Modugno, C. and Tino, G. M. and Gill, P. and Klein, H. and Margolis, H. and Reynaud, S. and Salomon, C. and Lambrecht, A. and Peik, E. and Jentsch, C. and Johann, U. and Rathke, A. and Bouyer, P. and Cacciapuoti, L. and De Natale, P. and Christophe, B. and Foulon, B. and Touboul, P. and Maleki, L. and Yu, N. and Turyshev, S. G. and Anderson, J. D. and Schmidt-Kaler, F. and Walser, R. and Vigue, J. and Buechner, M. and Angonin, M. -C. and Delva, P. and Tourrenc, P. and Bingham, R. and Kent, B. and Wicht, A. and Wang, L. J. and Bongs, K. and Dittus, Hj. and Laemmerzahl, C. and Theil, S. and Sengstock, K. and Peters, A. and Mueller, T. and Arndt, M. and Iess, L. and Bondu, F. and Brillet, A. and Samain, E. and Chiofalo, M. L. and Levi, F. and Calonico, D.}, title = {Matter wave explorer of gravity (MWXG)}, journal = {EXPERIMENTAL ASTRONOMY}, journal = {Exp. Astron.}, year = {2009}, volume = {23}, number = {2}, pages = {611-649}, doi = {10.1007/s10686-008-9125-6}, language = {English}, unique-id = {ISI:000263505600005}, web-of-science-categories = {Astronomy & Astrophysics} } |
2009 R Guerout, C Jungen, H Oueslati, SC Ross and M Telmini "Alternative choices of Coulomb channel functions" , Phys. Rev. A 79 042717 |
Abstract: A class of Coulomb radial functions is defined for use in atomic or molecular Rydberg multichannel quantum-defect calculations. The associated accumulated radial phase parameters beta(epsilon) have a simple functional dependence on the energy, analogous to the familiar Rydberg relation where beta(epsilon)=pi(n(*)-l), with n(*)=(-epsilon)(-1/2), enabling easy use in the empirical fitting of complex multichannel spectra. However, ``false roots'' at low-energy and strong energy dependences of the quantum defects are largely avoided in the approach, which also may be implemented in the framework of ab initio R-matrix calculations in a straightforward manner. The method is illustrated with one-channel and multichannel examples relating to atomic potassium, nitric oxide, and molecular hydrogen. |
BibTeX:
@article{Guerout2009, author = {Guerout, R. and Jungen, Ch. and Oueslati, H. and Ross, S. C. and Telmini, M.}, title = {Alternative choices of Coulomb channel functions}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2009}, volume = {79}, number = {4}, article-number = {042717}, doi = {10.1103/PhysRevA.79.042717}, language = {English}, unique-id = {ISI:000265946900101}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2009 R Guerout, P Soldan, M Aymar, J Deiglmayr and O Dulieu "Core Repulsion Effects in Alkali Trimers" , Int. J. Quantum Chem. 109 3387-3398. |
Abstract: The present article is related to a talk presented during the Symposium on Coherent Control and Ultracold Chemistry held during the Sixth Congress of the International Society for Theoretical Chemical Physics (ISTCP-VI, July 2008). The talk was entitled ``Electronic structure properties of alkali dimers and trimers. Prospects for alignment of ultracold molecules.'' Here we report on the electrostatic repulsion forces of the ionic cores at short separation, involved when the potential energy surfaces of alkali trimers are calculated with a quantum chemistry approach based on effective large-core potentials for ionic core description. We demonstrate that such forces in the triatomic molecule can be obtained as the sum of three pairwise terms. We illustrate our results on the lowest electronic states of Cs-3, which are computed for the first time within a full configuration interaction based on a large Gaussian basis set. As a preliminary section, we also propose a brief introduction about the importance of alkali trimer systems in the context of cold and ultracold molecules. (C) 2009 Wiley Periodicals, Inc. Int J Quantum Chem 109:3387-3398, 2009 |
BibTeX:
@article{Guerout2009a, author = {Guerout, R. and Soldan, P. and Aymar, M. and Deiglmayr, J. and Dulieu, O.}, title = {Core Repulsion Effects in Alkali Trimers}, journal = {INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY}, journal = {Int. J. Quantum Chem.}, year = {2009}, volume = {109}, number = {14, SI}, pages = {3387-3398}, doi = {10.1002/qua.22304}, language = {English}, unique-id = {ISI:000270884200020}, web-of-science-categories = {Chemistry, Physical; Mathematics, Interdisciplinary Applications; Physics, Atomic, Molecular & Chemical} } |
2009 G-L Ingold, A Lambrecht and S Reynaud "Quantum dissipative Brownian motion and the Casimir effect" , Phys. Rev. E 80 041113 |
Abstract: We explore an analogy between the thermodynamics of a free dissipative quantum particle in one dimension and that of an electromagnetic field between two mirrors of finite conductivity. While a free particle isolated from its environment will effectively be in the high-temperature limit for any nonvanishing temperature, a finite coupling to the environment leads to quantum effects ensuring the correct low-temperature behavior. Even then, it is found that under appropriate circumstances the entropy can be a nonmonotonic function of the temperature. Such a scenario with its specific dependence on the ratio of temperature and damping constant also appears for the transverse electric mode in the Casimir effect. The limits of vanishing dissipation for the quantum particle and of infinite conductivity of the mirrors in the Casimir effect both turn out to be noncontinuous. |
BibTeX:
@article{Ingold2009, author = {Ingold, Gert-Ludwig and Lambrecht, Astrid and Reynaud, Serge}, title = {Quantum dissipative Brownian motion and the Casimir effect}, journal = {PHYSICAL REVIEW E}, journal = {Phys. Rev. E}, year = {2009}, volume = {80}, number = {4, 1}, article-number = {041113}, doi = {10.1103/PhysRevE.80.041113}, language = {English}, unique-id = {ISI:000271350400023}, web-of-science-categories = {Physics, Fluids & Plasmas; Physics, Mathematical} } |
2009 G Jourdan, A Lambrecht, F Comin and J Chevrier "Quantitative non-contact dynamic Casimir force measurements" , EPL 85 31001 |
Abstract: We show that the Casimir force (CF) gradient can be measured with no contact involved. Results of the CF measurement with systematic uncertainty of 3% are presented for the distance range of 100-600 nm. The statistical uncertainty is shown to be due to the thermal fluctuations of the force probe. The corresponding signal-to-noise ratio equals unity at the distance of 600 nm. Direct contact between surfaces used in most previous studies to determine absolute distance separation is here precluded. Use of direct contact to identify the origin of distances is a severe limitation for studies of the CF on structured surfaces as it deteriorates irreversibly the studied surface and the probe. This force machine uses a dynamical method with an inserted gold sphere probe glued to a lever. The lever is mechanically excited at resonant frequency in front of a chosen sample. The absolute distance determination is achieved to be possible, without any direct probe/sample contact, using an electrostatic method associated to a real time correction of the mechanical drift. The positioning shift uncertainty is as low as 2 nm. Use of this instrument to probe a very thin film of gold (10 nm) reveals important spatial variations in the measurement. Copyright (C) EPLA, 2009 |
BibTeX:
@article{Jourdan2009, author = {Jourdan, G. and Lambrecht, A. and Comin, F. and Chevrier, J.}, title = {Quantitative non-contact dynamic Casimir force measurements}, journal = {EPL}, journal = {EPL}, year = {2009}, volume = {85}, number = {3}, article-number = {31001}, doi = {10.1209/0295-5075/85/31001}, language = {English}, unique-id = {ISI:000263693200009}, web-of-science-categories = {Physics, Multidisciplinary} } |
2009 VV Klimov and A Lambrecht "Van der Waals Forces Between Plasmonic Nanoparticles" , Plasmonics 4 31-36. |
Abstract: We propose a new approach to calculate van der Waals forces between nanoparticles where the van der Waals energy can be reduced to the energy of localized plasmons in nanoparticles. The general theory is applied to describe the interaction between two metallic nanoparticles and between a nanoparticle and a perfectly conducting plane. Our results could be used to prove experimentally the existence of new, recently predicted type of plasmon oscillation (Klimov and Guzatov, Phys Rev B 75:024303, 2007a; Klimov and Guzatov, Quantum Electron 37:209, 2007b) and to elaborate new control mechanisms for the adherence of nanoparticles between each other or onto surfaces. |
BibTeX:
@article{Klimov2009, author = {Klimov, V. V. and Lambrecht, A.}, title = {Van der Waals Forces Between Plasmonic Nanoparticles}, journal = {PLASMONICS}, journal = {Plasmonics}, year = {2009}, volume = {4}, number = {1}, pages = {31-36}, doi = {10.1007/s11468-008-9074-y}, language = {English}, unique-id = {ISI:000264134700004}, web-of-science-categories = {Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary} } |
2009 A Lambrecht and VN Marachevsky "New geometries in the Casimir effect: dielectric gratings" , In 60 years of the Casimir effect. 161 012014 |
Abstract: An exact solution for the Casimir force between two arbitrary dielectric gratings with the same period d is presented. The Casimir energy for two dielectric gratings or periodic dielectrics is expressed in terms of Rayleigh coefficients. The theory is applied to calculate the Casimir force in several cases of interest. |
BibTeX:
@inproceedings{Lambrecht2009, author = {Lambrecht, Astrid and Marachevsky, Valery N.}, title = {New geometries in the Casimir effect: dielectric gratings}, booktitle = {60 years of the Casimir effect}, year = {2009}, volume = {161}, article-number = {012014}, doi = {10.1088/1742-6596/161/1/012014}, language = {English}, unique-id = {ISI:000287359000014}, web-of-science-categories = {Physics, Atomic, Molecular & Chemical; Physics, Multidisciplinary} } |
2009 A Lambrecht and VN Marachevsky "THEORY OF THE CASIMIR EFFECT IN ONE-DIMENSIONAL PERIODIC DIELECTRIC SYSTEMS" , Int. J. Mod. Phys. A 24 1789-1795. |
Abstract: We derive an exact theory of the Casimir interaction between two arbitrary dielectric gratings with coinciding periods d. We then express the Casimir energy for two dielectric gratings or periodic dielectrics with coinciding periods in terms of Rayleigh coefficients. |
BibTeX:
@article{Lambrecht2009a, author = {Lambrecht, Astrid and Marachevsky, Valery N.}, title = {THEORY OF THE CASIMIR EFFECT IN ONE-DIMENSIONAL PERIODIC DIELECTRIC SYSTEMS}, journal = {INTERNATIONAL JOURNAL OF MODERN PHYSICS A}, journal = {Int. J. Mod. Phys. A}, year = {2009}, volume = {24}, number = {8-9}, pages = {1789-1795}, language = {English}, unique-id = {ISI:000265092600056}, web-of-science-categories = {Physics, Nuclear; Physics, Particles & Fields} } |
2009 A Levy, B Christophe, P Berio, G Metris, JM Courty and S Reynaud "Pioneer 10 Doppler data analysis: Disentangling periodic and secular anomalies" , Adv. Space Res. 43 1538-1544. |
Abstract: This paper reports the results of an analysis of the Doppler tracking data of Pioneer probes which did show an anomalous behaviour. A software has been developed for the sake of performing a data analysis as independent as possible from that of Anderson et al. [Anderson, J., Laing, P.A., Lau, E.L., Liu, A.S., Nieto, M.M., Turyshev, S.G. Study of the anomalous acceleration of Pioneer 10 and 11. Phys. Rev. D 65, 082004, 2002], using the same data set. A first output of this new analysis is a confirmation of the existence of a secular anomaly with an amplitude about 0.8 nm s(-2) compatible with that reported by Anderson et al. A second output is the study of periodic variations of the anomaly, which we characterize as functions of the azimuthal angle phi defined by the directions Sun-Earth Antenna and Sun-Pioneer. An improved fit is obtained with periodic variations written as the sum of a secular acceleration and two sinusoids of the angles phi and 2 phi. The tests which have been performed for assessing the robustness of these results are presented. (C) 2009 COSPAR. Published by Elsevier Ltd. All rights reserved. |
BibTeX:
@article{Levy2009, author = {Levy, A. and Christophe, B. and Berio, P. and Metris, G. and Courty, J. -M. and Reynaud, S.}, title = {Pioneer 10 Doppler data analysis: Disentangling periodic and secular anomalies}, journal = {ADVANCES IN SPACE RESEARCH}, journal = {Adv. Space Res.}, year = {2009}, volume = {43}, number = {10}, pages = {1538-1544}, doi = {10.1016/j.asr.2009.01.003}, language = {English}, unique-id = {ISI:000266276100008}, web-of-science-categories = {Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences} } |
2009 R Messina, DAR Dalvit, PA Maia Neto, A Lambrecht and S Reynaud "Dispersive interactions between atoms and nonplanar surfaces" , Phys. Rev. A 80 022119 |
Abstract: We calculate the dispersive force between a ground-state atom and a nonplanar surface. We present explicit results for a corrugated surface, derived from the scattering approach at first order in the corrugation amplitude. A variety of analytical results in different limiting cases, including the van der Waals and Casimir-Polder regimes, is derived. We compute numerically the exact first-order dispersive potential for arbitrary separation distances and corrugation wavelengths for a rubidium atom on top of a silicon or gold corrugated surface. We discuss in detail the inadequacy of the proximity force approximation, and present a simple but adequate approximation for computing the potential. |
BibTeX:
@article{Messina2009, author = {Messina, Riccardo and Dalvit, Diego A. R. and Maia Neto, Paulo A. and Lambrecht, Astrid and Reynaud, Serge}, title = {Dispersive interactions between atoms and nonplanar surfaces}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2009}, volume = {80}, number = {2}, article-number = {022119}, doi = {10.1103/PhysRevA.80.022119}, language = {English}, unique-id = {ISI:000269638200031}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2009 I Pirozhenko and A Lambrecht "Repulsive Casimir forces and the role of surface modes" , Phys. Rev. A 80 042510 |
Abstract: The Casimir repulsion between a metal and a dielectric suspended in a liquid has been thoroughly studied in recent experiments. In the present paper we consider surface modes in three layered systems modeled by dielectric functions guaranteeing repulsion. It is shown that surface modes play a decisive role in this phenomenon at short separations. For a toy plasma model we find the contribution of the surface modes at all distances. |
BibTeX:
@article{Pirozhenko2009, author = {Pirozhenko, I. and Lambrecht, A.}, title = {Repulsive Casimir forces and the role of surface modes}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2009}, volume = {80}, number = {4}, article-number = {042510}, doi = {10.1103/PhysRevA.80.042510}, language = {English}, unique-id = {ISI:000271351000086}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2009 S Reynaud, C Salomon and P Wolf "Testing General Relativity with Atomic Clocks" , Space Sci. Rev. 148 233-247. |
Abstract: We discuss perspectives for new tests of general relativity which are based on recent technological developments as well as new ideas. We focus our attention on tests performed with atomic clocks and do not repeat arguments present in the other contributions to the present issue (Space Sci. Rev. 2009, This Issue). In particular, we present the scientific motivations of the space projects ACES (Salomon et al. in CR Acad. Sci. IV-2:1313, 2001) and SAGAS (Wolf et al. in Exp. Astron. 23:651, 2009). |
BibTeX:
@article{Reynaud2009, author = {Reynaud, S. and Salomon, C. and Wolf, P.}, title = {Testing General Relativity with Atomic Clocks}, journal = {SPACE SCIENCE REVIEWS}, journal = {Space Sci. Rev.}, year = {2009}, volume = {148}, number = {1-4}, pages = {233-247}, doi = {10.1007/s11214-009-9539-0}, language = {English}, unique-id = {ISI:000273812800017}, web-of-science-categories = {Astronomy & Astrophysics} } |
2009 SG Turyshev, M Shao, KL Nordtvedt, H Dittus, C Laemmerzahl, S Theil, C Salomon, S Reynaud, T Damour, U Johann, P Bouyer, P Touboul, B Foulon, O Bertolami and J Paramos "Advancing fundamental physics with the Laser Astrometric Test of Relativity The LATOR mission" , Exp. Astron. 27 27-60. |
Abstract: The Laser Astrometric Test of Relativity (LATOR) is an experiment designed to test the metric nature of gravitation-a fundamental postulate of the Einstein's general theory of relativity. The key element of LATOR is a geometric redundancy provided by the long-baseline optical interferometry and interplanetary laser ranging. By using a combination of independent time-series of gravitational deflection of light in the immediate proximity to the Sun, along with measurements of the Shapiro time delay on interplanetary scales (to a precision respectively better than 0.1 picoradians and 1 cm), LATOR will significantly improve our knowledge of relativistic gravity and cosmology. The primary mission objective is i) to measure the key post-Newtonian Eddington parameter gamma with accuracy of a part in 10(9). 1/2 (1 - gamma) is a direct measure for presence of a new interaction in gravitational theory, and, in its search, LATOR goes a factor 30,000 beyond the present best result, Cassini's 2003 test. Other mission objectives include: ii) first measurement of gravity's non-linear effects on light to similar to 0.01% accuracy; including both the traditional Eddington beta parameter and also the spatial metric's 2nd order potential contribution (never measured before); iii) direct measurement of the solar quadrupole moment J(2) (currently unavailable) to accuracy of a part in 200 of its expected size of similar or equal to 10(-7); iv) direct measurement of the ``frame-dragging'' effect on light due to the Sun's rotational gravitomagnetic field, to 0.1% accuracy. LATOR's primary measurement pushes to unprecedented accuracy the search for cosmologically relevant scalar-tensor theories of gravity by looking for a remnant scalar field in today's solar system. We discuss the science objectives of the mission, its technology, mission and optical designs, as well as expected performance of this experiment. LATOR will lead to very robust advances in the tests of fundamental physics: this mission could discover a violation or extension of general relativity and/or reveal the presence of an additional long range interaction in the physical law. There are no analogs to LATOR; it is unique and is a natural culmination of solar system gravity experiments. |
BibTeX:
@article{Turyshev2009, author = {Turyshev, S. G. and Shao, M. and Nordtvedt, K. L. and Dittus, H. and Laemmerzahl, C. and Theil, S. and Salomon, C. and Reynaud, S. and Damour, T. and Johann, U. and Bouyer, P. and Touboul, P. and Foulon, B. and Bertolami, O. and Paramos, J.}, title = {Advancing fundamental physics with the Laser Astrometric Test of Relativity The LATOR mission}, journal = {EXPERIMENTAL ASTRONOMY}, journal = {Exp. Astron.}, year = {2009}, volume = {27}, number = {1-2}, pages = {27-60}, doi = {10.1007/s10686-009-9170-9}, language = {English}, unique-id = {ISI:000272029400004}, web-of-science-categories = {Astronomy & Astrophysics} } |
2009 P Wolf, CJ Borde, A Clairon, L Duchayne, A Landragin, P Lemonde, G Santarelli, W Ertmer, E Rasel, FS Cataliotti, M Inguscio, GM Tino, P Gill, H Klein, S Reynaud, C Salomon, E Peik, O Bertolami, P Gil, J Paramos, C Jentsch, U Johann, A Rathke, P Bouyer, L Cacciapuoti, D Izzo, P De Natale, B Christophe, P Touboul, SG Turyshev, J Anderson, ME Tobar, F Schmidt-Kaler, J Vigue, AA Madej, L Marmet, MC Angonin, P Delva, P Tourrenc, G Metris, H Mueller, R Walsworth, ZH Lu, LJ Wang, K Bongs, A Toncelli, M Tonelli, H Dittus, C Laemmerzahl, G Galzerano, P Laporta, J Laskar, A Fienga, F Roques and K Sengstock "Quantum physics exploring gravity in the outer solar system: the SAGAS project" , Exp. Astron. 23 651-687. |
Abstract: We summarise the scientific and technological aspects of the Search for Anomalous Gravitation using Atomic Sensors (SAGAS) project, submitted to ESA in June 2007 in response to the Cosmic Vision 2015-2025 call for proposals. The proposed mission aims at flying highly sensitive atomic sensors (optical clock, cold atom accelerometer, optical link) on a Solar System escape trajectory in the 2020 to 2030 time-frame. SAGAS has numerous science objectives in fundamental physics and Solar System science, for example numerous tests of general relativity and the exploration of the Kuiper belt. The combination of highly sensitive atomic sensors and of the laser link well adapted for large distances will allow measurements with unprecedented accuracy and on scales never reached before. We present the proposed mission in some detail, with particular emphasis on the science goals and associated measurements and technologies. |
BibTeX:
@article{Wolf2009, author = {Wolf, P. and Borde, Ch. J. and Clairon, A. and Duchayne, L. and Landragin, A. and Lemonde, P. and Santarelli, G. and Ertmer, W. and Rasel, E. and Cataliotti, F. S. and Inguscio, M. and Tino, G. M. and Gill, P. and Klein, H. and Reynaud, S. and Salomon, C. and Peik, E. and Bertolami, O. and Gil, P. and Paramos, J. and Jentsch, C. and Johann, U. and Rathke, A. and Bouyer, P. and Cacciapuoti, L. and Izzo, D. and De Natale, P. and Christophe, B. and Touboul, P. and Turyshev, S. G. and Anderson, J. and Tobar, M. E. and Schmidt-Kaler, F. and Vigue, J. and Madej, A. A. and Marmet, L. and Angonin, M. -C. and Delva, P. and Tourrenc, P. and Metris, G. and Mueller, H. and Walsworth, R. and Lu, Z. H. and Wang, L. J. and Bongs, K. and Toncelli, A. and Tonelli, M. and Dittus, H. and Laemmerzahl, C. and Galzerano, G. and Laporta, P. and Laskar, J. and Fienga, A. and Roques, F. and Sengstock, K.}, title = {Quantum physics exploring gravity in the outer solar system: the SAGAS project}, journal = {EXPERIMENTAL ASTRONOMY}, journal = {Exp. Astron.}, year = {2009}, volume = {23}, number = {2}, pages = {651-687}, doi = {10.1007/s10686-008-9118-5}, language = {English}, unique-id = {ISI:000263505600006}, web-of-science-categories = {Astronomy & Astrophysics} } |
2008 DAR Dalvit, PA Maia Neto, A Lambrecht and S Reynaud "Probing quantum-vacuum geometrical effects with cold atoms" , Phys. Rev. Lett. 100 040405 |
Abstract: The lateral Casimir-Polder force between an atom and a corrugated surface should allow one to study experimentally nontrivial geometrical effects in the electromagnetic quantum vacuum. Here, we derive the theoretical expression of this force in the scattering approach. We show that large corrections to the ``proximity force approximation'' could be measured using present-day technology with a Bose-Einstein condensate used as a vacuum field sensor. |
BibTeX:
@article{Dalvit2008, author = {Dalvit, Diego A. R. and Maia Neto, Paulo A. and Lambrecht, Astrid and Reynaud, Serge}, title = {Probing quantum-vacuum geometrical effects with cold atoms}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2008}, volume = {100}, number = {4}, article-number = {040405}, doi = {10.1103/PhysRevLett.100.040405}, language = {English}, unique-id = {ISI:000252863400005}, web-of-science-categories = {Physics, Multidisciplinary} } |
2008 DAR Dalvit, PA Maia Neto, A Lambrecht and S Reynaud "Lateral Casimir-Polder force with corrugated surfaces" , J. Phys. A-Math. Theor. 41 164028 |
Abstract: We derive the lateral Casimir-Polder force on a ground-state atom on top of a corrugated surface, up to first order in the corrugation amplitude. Our calculation is based on the scattering approach, which takes into account nonspecular reflections and polarization mixing for electromagnetic quantum fluctuations impinging on real materials. We compare our first order exact result with two commonly used approximation methods. We show that the proximity force approximation ( large corrugation wavelengths) overestimates the lateral force, while the pairwise summation approach underestimates it due to the non-additivity of dispersion forces. We argue that a frequency shift measurement for the dipolar lateral oscillations of cold atoms could provide a striking demonstration of non-trivial geometrical effects on the quantum vacuum. |
BibTeX:
@article{Dalvit2008a, author = {Dalvit, Diego A. R. and Maia Neto, Paulo A. and Lambrecht, Astrid and Reynaud, Serge}, title = {Lateral Casimir-Polder force with corrugated surfaces}, journal = {JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL}, journal = {J. Phys. A-Math. Theor.}, year = {2008}, volume = {41}, number = {16}, article-number = {164028}, doi = {10.1088/1751-8113/41/16/164028}, language = {English}, unique-id = {ISI:000254778400029}, web-of-science-categories = {Physics, Multidisciplinary; Physics, Mathematical} } |
2008 C Genet, A Lambrecht and S Reynaud "The Casimir effect in the nanoworld" , Eur. Phys. J.-Spec. Top. 160 183-193. |
Abstract: The Casimir effect is a force arising in the macroscopic world as a result of radiation pressure of vacuum fluctuations. It thus plays a key role in the emerging domain of nano-electro-mechanical systems (NEMS). This role is reviewed in the present paper, with discussions of the influence of the material properties of the mirrors, as well as the geometry dependence of the Casimir effect between corrugated mirrors. In particular, the lateral component of the Casimir force and restoring torque between metal plates with misaligned corrugations are evaluated. |
BibTeX:
@article{Genet2008, author = {Genet, C. and Lambrecht, A. and Reynaud, S.}, title = {The Casimir effect in the nanoworld}, journal = {EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS}, journal = {Eur. Phys. J.-Spec. Top.}, year = {2008}, volume = {160}, pages = {183-193}, doi = {10.1140/epjst/e2008-00722-y}, language = {English}, unique-id = {ISI:000256930600020}, web-of-science-categories = {Physics, Multidisciplinary} } |
2008 M-T Jaekel and S Reynaud "Gravity tests and the Pioneer anomaly" , In Lasers, clocks and drag-free control. 349 193-208. |
Abstract: Experimental tests of gravity performed in the solar system show a good agreement with general relativity. The latter is, however, challenged by the Pioneer anomaly which might be pointing at some modification of gravity law at ranges of the order of the size of the solar system. We introduce a metric extension of general relativity which, while preserving the equivalence principle, modifies the coupling between curvature and stress tensors and, therefore, the metric solution in the solar system. The ``post-Einsteinian extension'' replaces Newton gravitation constant by two running coupling constants, which depend on the scale and differ in the sectors of traceless and traced tensors, so that the metric solution is characterized by two gravitation potentials. The extended theory has the capability to preserve compatibility with gravity tests while accounting for the Pioneer anomaly. It can also be tested by new experiments or, maybe, by having a new look at data of already performed experiments. |
BibTeX:
@inproceedings{Jaekel2008, author = {Jaekel, Marc-Thierry and Reynaud, Serge}, title = {Gravity tests and the Pioneer anomaly}, booktitle = {Lasers, clocks and drag-free control}, year = {2008}, volume = {349}, pages = {193-208}, language = {English}, unique-id = {ISI:000251801600008}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Applied} } |
2008 A Lambrecht "Nanotechnology - Shaping the void" , Nature 454 836-837. |
BibTeX:
@article{Lambrecht2008, author = {Lambrecht, Astrid}, title = {Nanotechnology - Shaping the void}, journal = {NATURE}, journal = {Nature}, year = {2008}, volume = {454}, number = {7206}, pages = {836-837}, doi = {10.1038/454836a}, language = {English}, unique-id = {ISI:000258398600022}, web-of-science-categories = {Multidisciplinary Sciences} } |
2008 A Lambrecht and VN Marachevsky "Casimir Interaction of Dielectric Gratings" , Phys. Rev. Lett. 101 160403 |
Abstract: We derive an exact solution for the Casimir force between two arbitrary periodic dielectric gratings and illustrate our method by applying it to two nanostructured silicon gratings. We also reproduce the Casimir force gradient measured recently [H. B. Chan, Y. Bao, J. Zou, R. A. Cirelli, F. Klemens, W. M. Mansfield, and C. S. Pai, Phys. Rev. Lett. 101, 030401 (2008)] between a silicon grating and a gold sphere taking into account the material dependence of the force. We find good agreement between our theoretical results and the measured values both in absolute force values and the ratios between the exact force and proximity force approximation predictions. |
BibTeX:
@article{Lambrecht2008a, author = {Lambrecht, Astrid and Marachevsky, Valery N.}, title = {Casimir Interaction of Dielectric Gratings}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2008}, volume = {101}, number = {16}, article-number = {160403}, doi = {10.1103/PhysRevLett.101.160403}, language = {English}, unique-id = {ISI:000260141300004}, web-of-science-categories = {Physics, Multidisciplinary} } |
2008 A Lambrecht and IG Pirozhenko "Casimir force between dissimilar mirrors and the role of the surface plasmons" , Phys. Rev. A 78 062102 |
Abstract: We investigate the Casimir force between two dissimilar plane mirrors, the material properties of which are described by Drude or Lorentz models. We calculate analytically the short and long distance asymptote of the force and relate its behavior to the influence of interacting surface plasmons. In particular, we discuss conditions under which Casimir repulsion could be achieved. |
BibTeX:
@article{Lambrecht2008b, author = {Lambrecht, A. and Pirozhenko, I. G.}, title = {Casimir force between dissimilar mirrors and the role of the surface plasmons}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2008}, volume = {78}, number = {6}, article-number = {062102}, doi = {10.1103/PhysRevA.78.062102}, language = {English}, unique-id = {ISI:000262242400026}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2008 B Lamine, C Fabre and N Treps "Quantum improvement of time transfer between remote clocks" , Phys. Rev. Lett. 101 123601 |
Abstract: Exchanging light pulses to perform accurate space-time positioning is a paradigmatic issue of physics. It is ultimately limited by the quantum nature of light, which introduces fluctuations in the optical measurements and leads to the so-called standard quantum limit (SQL). We propose a new scheme combining homodyne detection and mode-locked femtosecond lasers that lead to a new SQL in time transfer, potentially reaching the yoctosecond range (10(-21)-10(-24) s). We demonstrate that this already very low SQL can be overcome using appropriately multimode squeezed light. Benefitting from the large number of photons and from the optimal choice of both the detection strategy and of the quantum resource, the proposed scheme represents a significant potential improvement in space-time positioning. |
BibTeX:
@article{Lamine2008, author = {Lamine, Brahim and Fabre, Claude and Treps, Nicolas}, title = {Quantum improvement of time transfer between remote clocks}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2008}, volume = {101}, number = {12}, article-number = {123601}, doi = {10.1103/PhysRevLett.101.123601}, language = {English}, unique-id = {ISI:000259377500029}, web-of-science-categories = {Physics, Multidisciplinary} } |
2008 PAM Neto, A Lambrecht and S Reynaud "Casimir energy between a plane and a sphere in electromagnetic vacuum" , Phys. Rev. A 78 012115 |
Abstract: The Casimir energy is computed in the geometry of interest for the most precise experiments, a plane and a sphere in electromagnetic vacuum. The scattering formula is developed on adapted plane waves and multipole basis, leading to an expression valid for arbitrary relative values of the sphere radius and interplate distance. In the limiting case of perfect reflection, the electromagnetic result is found to depart from the commonly used proximity-force approximation (PFA) significantly more rapidly than expected from scalar computations. |
BibTeX:
@article{Neto2008, author = {Neto, Paulo A. Maia and Lambrecht, Astrid and Reynaud, Serge}, title = {Casimir energy between a plane and a sphere in electromagnetic vacuum}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2008}, volume = {78}, number = {1}, article-number = {012115}, doi = {10.1103/PhysRevA.78.012115}, language = {English}, unique-id = {ISI:000258180300045}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2008 I Pirozhenko and A Lambrecht "Influence of slab thickness on the Casimir force" , Phys. Rev. A 77 013811 |
Abstract: We calculate the Casimir force between slabs of finite thickness made of intrinsic and doped silicon with different concentration of carriers and compare the results to those obtained for gold slabs. We use the Drude and the plasma models to describe the dielectric function for the carriers in doped Si. We discuss the possibility of experimentally testing the appropriateness of these models. We also investigate the influence of finite thickness on VO(2), which has recently been proposed for Casimir effect measurements testing the metal-insulator transition. |
BibTeX:
@article{Pirozhenko2008, author = {Pirozhenko, I. and Lambrecht, A.}, title = {Influence of slab thickness on the Casimir force}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2008}, volume = {77}, number = {1}, article-number = {013811}, doi = {10.1103/PhysRevA.77.013811}, language = {English}, unique-id = {ISI:000252862000166}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2008 IG Pirozhenko and A Lambrecht "Casimir repulsion and metamaterials" , J. Phys. A-Math. Theor. 41 164015 |
Abstract: We analyze the conditions for getting the Casimir repulsion between two nonequal plates. The force between plates with magnetic permeability defined by Drude or Lorentzmodels is calculated. The short- and long-distance limits of the force are derived. The Casimir set-up with the hypothetical perfect matching metamaterial is discussed. We put into question the possibility of getting repulsion within the design of metamaterials based on metallic inclusions. |
BibTeX:
@article{Pirozhenko2008a, author = {Pirozhenko, I. G. and Lambrecht, A.}, title = {Casimir repulsion and metamaterials}, journal = {JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL}, journal = {J. Phys. A-Math. Theor.}, year = {2008}, volume = {41}, number = {16}, article-number = {164015}, doi = {10.1088/1751-8113/41/16/164015}, language = {English}, unique-id = {ISI:000254778400016}, web-of-science-categories = {Physics, Multidisciplinary; Physics, Mathematical} } |
2008 S Reynaud, B Lamine, L Duchayne, P Wolf and MT Jaekel "Bounds on gravitational wave backgrounds from large distance clock comparisons" , Phys. Rev. D 77 122003 |
Abstract: Our space-time is filled with gravitational wave backgrounds that constitute a fluctuating environment created by astrophysical and cosmological sources. Bounds on these backgrounds are obtained from cosmological and astrophysical data but also by analysis of ranging and Doppler signals from distant spacecraft. We propose here a new way to set bounds on those backgrounds by performing clock comparisons between a ground clock and a remote spacecraft equipped with an ultrastable clock, rather than only ranging to an on-board transponder. This technique can then be optimized as a function of the signal to be measured and the dominant noise sources, leading to significant improvements on present bounds in a promising frequency range where different theoretical models are competing. We illustrate our approach using the SAGAS project which aims to fly an ultrastable optical clock in the outer solar system. |
BibTeX:
@article{Reynaud2008, author = {Reynaud, S. and Lamine, B. and Duchayne, L. and Wolf, P. and Jaekel, M. -T.}, title = {Bounds on gravitational wave backgrounds from large distance clock comparisons}, journal = {PHYSICAL REVIEW D}, journal = {Phys. Rev. D}, year = {2008}, volume = {77}, number = {12}, article-number = {122003}, doi = {10.1103/PhysRevD.77.122003}, language = {English}, unique-id = {ISI:000257290600007}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Particles & Fields} } |
2008 S Reynaud, PAM Neto and A Lambrecht "Casimir energy and geometry: beyond the proximity force approximation" , J. Phys. A-Math. Theor. 41 164004 |
Abstract: We review the relation between the Casimir effect and geometry, emphasizing deviations from the commonly used proximity force approximation (PFA). We use, to this aim, the scattering formalism which is nowadays the best tool available for accurate and reliable theory-experiment comparisons. We first recall the main lines of this formalism when the mirrors can be considered to obey specular reflection. We then discuss the more general case where non-planar mirrors give rise to non-specular reflection with wavevectors and field polarizations mixed. The general formalism has already been fruitfully used for evaluating the effect of roughness on the Casimir force as well as the lateral Casimir force or Casimir torque appearing between corrugated surfaces. In this paper, we focus our attention to the case of the lateral force which should make possible in the future an experimental demonstration of the nontrivial (i.e. beyond PFA) interplay of the geometry and Casimir effect. |
BibTeX:
@article{Reynaud2008a, author = {Reynaud, S. and Neto, P. A. Maia and Lambrecht, A.}, title = {Casimir energy and geometry: beyond the proximity force approximation}, journal = {JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL}, journal = {J. Phys. A-Math. Theor.}, year = {2008}, volume = {41}, number = {16}, article-number = {164004}, doi = {10.1088/1751-8113/41/16/164004}, language = {English}, unique-id = {ISI:000254778400005}, web-of-science-categories = {Physics, Multidisciplinary; Physics, Mathematical} } |
2008 RB Rodrigues, PA Maia Neto, A Lambrecht and S Reynaud "Casimir torque between corrugated metallic plates" , J. Phys. A-Math. Theor. 41 164019 |
Abstract: We consider two parallel corrugated plates and show that a Casimir torque arises when the corrugation directions are not aligned. We follow the scattering approach and calculate the Casimir energy up to second order in the corrugation amplitudes, taking into account nonspecular reflections, polarization mixing and the finite conductivity of the metals. We compare our results with the proximity force approximation, which overestimates the torque by a factor 2 when taking the conditions that optimize the effect. We argue that the Casimir torque could be measured for separation distances as large as 1 mu m. |
BibTeX:
@article{Rodrigues2008, author = {Rodrigues, Robson B. and Maia Neto, Paulo A. and Lambrecht, Astrid and Reynaud, Serge}, title = {Casimir torque between corrugated metallic plates}, journal = {JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL}, journal = {J. Phys. A-Math. Theor.}, year = {2008}, volume = {41}, number = {16}, article-number = {164019}, doi = {10.1088/1751-8113/41/16/164019}, language = {English}, unique-id = {ISI:000254778400020}, web-of-science-categories = {Physics, Multidisciplinary; Physics, Mathematical} } |
2007 F Intravaia, C Henkel and A Lambrecht "Role of surface plasmons in the Casimir effect" , Phys. Rev. A 76 033820 |
Abstract: In this paper we study the role of surface plasmon modes in the Casimir effect. The Casimir energy can be written as a sum over the modes of a real cavity and one may identify two sorts of modes, two evanescent surface plasmon modes and propagative modes. As one of the surface plasmon modes becomes propagative for some choice of parameters we adopt an adiabatic mode definition where we follow this mode into the propagative sector and count it together with the surface plasmon contribution, calling this contribution ``plasmonic.'' We evaluate analytically the contribution of the plasmonic modes to the Casimir energy. Surprisingly we find that this becomes repulsive for intermediate and large mirror separations. The contribution of surface plasmons to the Casimir energy plays a fundamental role not only at short but also at large distances. This suggests possibilities to tailor the Casimir force via a manipulation of the surface plasmons properties. |
BibTeX:
@article{Intravaia2007, author = {Intravaia, F. and Henkel, C. and Lambrecht, A.}, title = {Role of surface plasmons in the Casimir effect}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2007}, volume = {76}, number = {3}, article-number = {033820}, doi = {10.1103/PhysRevA.76.033820}, language = {English}, unique-id = {ISI:000249786000161}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2007 F Intravaia and A Lambrecht "The role of surface plasmon modes in the Casimir effect" , Open Syst. Inf. Dyn. 14 159-168. |
Abstract: In this paper, we study the role of surface plasmon modes in the Casimir effect. First we write the Casimir energy as the sum over the modes of a real cavity. We may identify two sorts of modes, two evanescent surface plasmon modes and propagative modes. As one of the surface plasmon modes becomes propagative for some choice of parameters we adopt an adiabatic mode definition where we follow this mode into the propagative sector and count it together with the surface plasmon contribution, calling this contribution ``plasmonic''. The remaining modes are propagative cavity modes, which we call ``photonic''. The Casimir energy contains two main contributions, one coming from the plasmonic, the other from the photonic modes. Surprisingly we find that the plasmonic contribution to the Casimir energy becomes repulsive for intermediate and large mirror separations. Alternatively, we discuss the common surface plasmon defintion, which includes only evanescent waves, where this effect is not found. We show that, in contrast to an intuitive expectation, for both definitions the Casimir energy is the sum of two very large contributions which nearly cancel each other. The contribution of surface plasmons to the Casimir energy plays a fundamental role not only at short but also at large distances. |
BibTeX:
@article{Intravaia2007a, author = {Intravaia, F. and Lambrecht, A.}, title = {The role of surface plasmon modes in the Casimir effect}, journal = {OPEN SYSTEMS & INFORMATION DYNAMICS}, journal = {Open Syst. Inf. Dyn.}, year = {2007}, volume = {14}, number = {2}, pages = {159-168}, doi = {10.1007/s11080-007-9044-4}, language = {English}, unique-id = {ISI:000247780600004}, web-of-science-categories = {Thermodynamics; Computer Science, Information Systems; Mathematics, Applied; Mechanics; Physics, Mathematical; Statistics & Probability} } |
2007 M-T Jaekel and S Reynaud "Conformal symmetry and quantum localization in space-time" , In Geometrical methods in physics. 956 61-72. |
Abstract: The classical procedures which define the relativistic notion of space-time can be implemented in the framework of Quantum Field Theory. Only relying on the conformal symmetries of field propagation, time-frequency transfer and localization lead to the definition of time-frequency references and positions in space-time as quantum observables. Quantum positions have a non vanishing commutator identifying with spin, both observables characterizing quantum localization in space-time. Frame transformations to accelerated frames differ from their classical counterparts. Conformal symmetry nevertheless allows to extend the covariance rules underlying the formalism of general relativity under an algebraic form suiting the quantum framework. |
BibTeX:
@inproceedings{Jaekel2007, author = {Jaekel, Marc-Thierry and Reynaud, Serge}, title = {Conformal symmetry and quantum localization in space-time}, booktitle = {Geometrical methods in physics}, year = {2007}, volume = {956}, pages = {61-72}, language = {English}, unique-id = {ISI:000251715200009}, web-of-science-categories = {Physics, Mathematical} } |
2007 A Lambrecht, I Pirozhenko, L Duraffourg and P Andreucci "The Casimir effect for silicon and gold slabs" , EPL 77 44006 |
Abstract: We present calculations of the Casimir force between silicon and gold slabs of variable thickness. For silicon, the force is found to depend strongly on slab thickness and to decrease rapidly when the slab separation exceeds the thickness. For gold, Drude and plasma models give qualitatively different predictions for the Casimir force at large slab separations. We explain the influence of slab thickness by analyzing the phase factor acquired by the vacuum field when propagating inside the material slab. The present results could be interesting for nanotechnologies to eliminate an unwanted Casimir force. Copyright (C) EPLA, 2007. |
BibTeX:
@article{Lambrecht2007, author = {Lambrecht, A. and Pirozhenko, I. and Duraffourg, L. and Andreucci, Ph.}, title = {The Casimir effect for silicon and gold slabs}, journal = {EPL}, journal = {EPL}, year = {2007}, volume = {77}, number = {4}, article-number = {44006}, doi = {10.1209/0295-5075/77/44006}, language = {English}, unique-id = {ISI:000245743300013}, web-of-science-categories = {Physics, Multidisciplinary} } |
2007 S Reynaud and M-T Jaekel "Long range gravity tests and the Pioneer anomaly" , Int. J. Mod. Phys. D 16 2091-2105. |
Abstract: Experimental tests of gravity performed in the solar system show a good agreement with general relativity. The latter is, however, challenged by the Pioneer anomaly, which might be pointing at some modification of gravity law at ranges of the order of the size of the solar system. As this question could be related to the puzzles of ``dark matter'' or ``dark energy,'' it is important to test it with care. There exist metric extensions of general relativity which preserve the well-verified equivalence principle while possibly changing the metric solution in the solar system. Such extensions have the capability to preserve compatibility with existing gravity tests while opening free space for the Pioneer anomaly. They constitute arguments for new mission designs and new space technologies as well as for having a new look at data of already-performed experiments. |
BibTeX:
@article{Reynaud2007, author = {Reynaud, Serge and Jaekel, Marc-Thierry}, title = {Long range gravity tests and the Pioneer anomaly}, journal = {INTERNATIONAL JOURNAL OF MODERN PHYSICS D}, journal = {Int. J. Mod. Phys. D}, year = {2007}, volume = {16}, number = {12A}, pages = {2091-2105}, doi = {10.1142/S0218271807011656}, language = {English}, unique-id = {ISI:000252850000018}, web-of-science-categories = {Astronomy & Astrophysics} } |
2007 RB Rodrigues, PA Maia Neto, A Lambrecht and S Reynaud "Comment on ``Lateral Casimir force beyond the proximity-force approximation'' Reply" , Phys. Rev. Lett. 98 068902 |
BibTeX:
@article{Rodrigues2007, author = {Rodrigues, Robson B. and Maia Neto, Paulo A. and Lambrecht, Astrid and Reynaud, Serge}, title = {Comment on ``Lateral Casimir force beyond the proximity-force approximation'' Reply}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2007}, volume = {98}, number = {6}, article-number = {068902}, doi = {10.1103/PhysRevLett.98.068902}, language = {English}, unique-id = {ISI:000244117400074}, web-of-science-categories = {Physics, Multidisciplinary} } |
2007 RB Rodrigues, PAM Neto, A Lambrecht and S Reynaud "Lateral Casimir force beyond the proximity force approximation: A nontrivial interplay between geometry and quantum vacuum" , Phys. Rev. A 75 062108 |
Abstract: The lateral Casimir force between two corrugated metallic plates makes possible a study of the nontrivial interplay of geometry and Casimir effect appearing beyond the regime of validity of the proximity-force approximation. Quantitative evaluations can be obtained by using scattering theory in a perturbative expansion valid when the corrugation amplitudes are smaller than the three other length scales: the mean separation distance L of the plates, the corrugation period lambda(C), and the plasma wavelength lambda(P). Within this perturbative expansion, evaluations are obtained for arbitrary relative values of L, lambda(C), and lambda(P) while limiting cases, some of them already known, are recovered when these values obey some specific orderings. The consequence of these results for comparison with existing experiments is discussed at the end of the paper. |
BibTeX:
@article{Rodrigues2007a, author = {Rodrigues, Robson B. and Neto, Paulo A. Maia and Lambrecht, Astrid and Reynaud, Serge}, title = {Lateral Casimir force beyond the proximity force approximation: A nontrivial interplay between geometry and quantum vacuum}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2007}, volume = {75}, number = {6}, article-number = {062108}, doi = {10.1103/PhysRevA.75.062108}, language = {English}, unique-id = {ISI:000247624300025}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2007 P Wolf, P Lemonde, A Lambrecht, S Bize, A Landragin and A Clairon "From optical lattice clocks to the measurement of forces in the Casimir regime" , Phys. Rev. A 75 063608 |
Abstract: We describe an experiment based on atoms trapped close to a macroscopic surface, to study the interactions between the atoms and the surface at very small separations (0.6-10 mu m). In this range the dominant potential is the QED interaction (Casimir-Polder and van der Waals) between the surface and the atom. Additionally, several theoretical models suggest the possibility of Yukawa-type potentials with sub-millimeter range, arising from new physics related to gravity. The proposed setup is very similar to neutral atom optical lattice clocks, but with the atoms trapped in lattice sites close to the reflecting mirror. A sequence of pulses of the probe laser at different frequencies is then used to create an interferometer with a coherent superposition between atomic states at different distances from the mirror (in different lattice sites). Assuming atom interferometry state-of-the-art measurement of the phase difference and a duration of the superposition of about 0.1 s, we expect to be able to measure the potential difference between separated states with an uncertainty of approximate to 10(-4) Hz. An analysis of systematic effects for different atoms and surfaces indicates no fundamentally limiting effect at the same level of uncertainty, but does influence the choice of atom and surface material. Based on those estimates, we expect that such an experiment would improve the best existing measurements of the atom-wall QED interaction by >= 2 orders of magnitude, while gaining up to four orders of magnitude on the best present limits on new interactions in the range between 100 nm and 100 mu m. |
BibTeX:
@article{Wolf2007, author = {Wolf, Peter and Lemonde, Pierre and Lambrecht, Astrid and Bize, Sebastien and Landragin, Arnaud and Clairon, Andre}, title = {From optical lattice clocks to the measurement of forces in the Casimir regime}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2007}, volume = {75}, number = {6}, article-number = {063608}, doi = {10.1103/PhysRevA.75.063608}, language = {English}, unique-id = {ISI:000247624300151}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2006 M Brown-Hayes, J Brownell, D Dalvit, W Kim, A Lambrecht, F Lombard, F Mazzitelli, S Middleman, V Nesvizhevsky, R Onofrio and S Reynaud "Thermal and dissipative effects in Casimir physics" , J. Phys. A-Math. Gen. 39 6195-6208. |
Abstract: We report on current efforts to detect the thermal and dissipative contributions to the Casimir force. For the thermal component, two experiments are in progress at Dartmouth and at the Institute Laue Langevin in Grenoble. The first experiment will seek to detect the Casimir force at the largest explorable distance using a cylinder-plane geometry which offers various advantages with respect to both sphere-plane and parallel-plane geometries. In the second experiment, the Casimir force in the parallel-plane configuration is measured with a dedicated torsional balance, up to 10 mu m. Parallelism of large surfaces, critical for this configuration, is maintained through the use of inclinometer technology already implemented at Grenoble for the study of gravitationally bound states of ultracold neutrons. For the dissipative component of the Casimir force, we discuss detection techniques based upon the use of hyperfine spectroscopy of ultracold atoms and Rydberg atoms. Although quite challenging, this triad of experimental efforts, if successful, will give us a better knowledge of the interplay between quantum and thermal fluctuations of the electromagnetic field and of the nature of dissipation induced by the motion of objects in a quantum vacuum. |
BibTeX:
@article{Brown-Hayes2006, author = {Brown-Hayes, M and Brownell, JH and Dalvit, DAR and Kim, WJ and Lambrecht, A and Lombard, FC and Mazzitelli, FD and Middleman, SM and Nesvizhevsky, VV and Onofrio, R and Reynaud, S}, title = {Thermal and dissipative effects in Casimir physics}, journal = {JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL}, journal = {J. Phys. A-Math. Gen.}, year = {2006}, volume = {39}, number = {21}, pages = {6195-6208}, doi = {10.1088/0305-4470/39/21/S10}, language = {English}, unique-id = {ISI:000238384200011}, web-of-science-categories = {Physics, Multidisciplinary; Physics, Mathematical} } |
2006 PR Bunker, R Guerout, ZJ Jakubek, P Jensen and SN Yurchenko "The rovibronic energies of the SiNSi radical in its (X)over-tilde(2)Pi(g) electronic state" , J. Mol. Struct. 795 9-13. |
Abstract: We present the results of a calculation of the rovibronic energies of the SiNSi radical in its (Chi) over tilde (2)Pi(g) electronic ground state. At bent geometries, the electronic degeneracy is split to give a lower state of A(2) symmetry and an upper state of B-2 symmetry; each state-is linear at equilibrium. The rovibronic calculation involves consideration of the Renner effect, and we initially made the calculation using ab initio A(2) and B-2 potential surfaces. The term values obtained were of help in making vibronic assignments in a newly obtained spectrum of the molecule. Having vibronically assigned the spectrum, we refined the potentials in a fitting to the vibronic term value separations. The optimized potentials allow us, in principle, to predict all rovibronic energies of the (Chi) over tilde (2)Pi(g) state. (c) 2006 Elsevier B.N. All rights reserved. |
BibTeX:
@article{Bunker2006, author = {Bunker, P. R. and Guerout, R. and Jakubek, Z. J. and Jensen, Per and Yurchenko, S. N.}, title = {The rovibronic energies of the SiNSi radical in its (X)over-tilde(2)Pi(g) electronic state}, journal = {JOURNAL OF MOLECULAR STRUCTURE}, journal = {J. Mol. Struct.}, year = {2006}, volume = {795}, number = {1-3}, pages = {9-13}, doi = {10.1016/j.molstruc.2006.02.014}, language = {English}, unique-id = {ISI:000240845600003}, web-of-science-categories = {Chemistry, Physical} } |
2006 F Intravaia and A Lambrecht "Comment on ``Surface plasmon modes and the casimir energy'' - Reply" , Phys. Rev. Lett. 96 218902 |
BibTeX:
@article{Intravaia2006, author = {Intravaia, F and Lambrecht, A}, title = {Comment on ``Surface plasmon modes and the casimir energy'' - Reply}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2006}, volume = {96}, number = {21}, article-number = {218902}, doi = {10.1103/PhysRevLett.96.218902}, language = {English}, unique-id = {ISI:000238004000063}, web-of-science-categories = {Physics, Multidisciplinary} } |
2006 M Jaekel and S Reynaud "Post-Einsteinian tests of gravitation" , Class. Quantum Gravity 23 777-798. |
Abstract: Einstein gravitation theory can be extended by preserving its geometrical nature but changing the relation between Curvature and energy-momentum tensors. This change accounts for radiative corrections, replacing the Newton gravitation constant by two running couplings which depend oil scale and differ in the two sectors of traceless and traced tensors. The metric and curvature tensors in the field of the Sun, which were obtained in previous papers within a linearized approximation, are then calculated without this restriction. Modifications of gravitational effects oil geodesics are then Studied, allowing one to explore phenomenological consequences of extensions lying in the vicinity of general relativity. Some of these extended theories are able to account for the Pioneer anomaly while remaining compatible with tests involving the motion of planets. The PPN ansatz corresponds to peculiar extensions of general relativity which do not have the ability to meet this compatibility challenge. |
BibTeX:
@article{Jaekel2006, author = {Jaekel, MT and Reynaud, S}, title = {Post-Einsteinian tests of gravitation}, journal = {CLASSICAL AND QUANTUM GRAVITY}, journal = {Class. Quantum Gravity}, year = {2006}, volume = {23}, number = {3}, pages = {777-798}, doi = {10.1088/0264-9381/23/3/015}, language = {English}, unique-id = {ISI:000235594100017}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Particles & Fields} } |
2006 M-T Jaekel and S Reynaud "Radar ranging and Doppler tracking in post-Einsteinian metric theories of gravity" , Class. Quantum Gravity 23 7561-7579. |
Abstract: The study of post-Einsteinian metric extensions of general relativity ( GR), which preserve the metric interpretation of gravity while considering metrics which may differ from that predicted by GR, is pushed one step further. We give a complete description of radar ranging and Doppler tracking in terms of the time delay affecting an electromagnetic signal travelling between the Earth and a remote probe. Results of previous publications concerning the Pioneer anomaly are corrected and an annually modulated anomaly is predicted besides the secular anomaly. Their correlation is shown to play an important role when extracting reliable information from Pioneer observations. The formalism developed here provides a basis for a quantitative analysis of the Pioneer data, in order to assess whether extended metric theories can be the appropriate description of gravity in the solar system. |
BibTeX:
@article{Jaekel2006a, author = {Jaekel, Marc-Thierry and Reynaud, Serge}, title = {Radar ranging and Doppler tracking in post-Einsteinian metric theories of gravity}, journal = {CLASSICAL AND QUANTUM GRAVITY}, journal = {Class. Quantum Gravity}, year = {2006}, volume = {23}, number = {24}, pages = {7561-7579}, doi = {10.1088/0264-9381/23/24/025}, language = {English}, unique-id = {ISI:000242327900028}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Particles & Fields} } |
2006 A Lambrecht, PAM Neto and S Reynaud "The Casimir effect within scattering theory" , New J. Phys. 8 243 |
Abstract: We review the theory of the Casimir effect using scattering techniques. After years of theoretical effort, this formalism is now largely mastered so that the accuracy of theory-experiment comparisons is determined by the level of precision and pertinence of the description of experimental conditions. Due to an imperfect knowledge of the optical properties of real mirrors used in the experiment, the effect of imperfect reflection remains a source of uncertainty in theory-experiment comparisons. For the same reason, the temperature dependence of the Casimir force between dissipative mirrors remains a matter of debate. We also emphasize that real mirrors do not obey exactly the assumption of specular reflection, which is used in nearly all calculations of material and temperature corrections. This difficulty may be solved by using a more general scattering formalism accounting for non-specular reflection with wavevectors and field polarizations mixed. This general formalism has already been fruitfully used for evaluating the effect of roughness on the Casimir force as well as the lateral Casimir force appearing between corrugated surfaces. The commonly used `proximity force approximation (PFA)' turns out to lead to inaccuracies in the description of these two effects. |
BibTeX:
@article{Lambrecht2006, author = {Lambrecht, Astrid and Neto, Paulo A. Maia and Reynaud, Serge}, title = {The Casimir effect within scattering theory}, journal = {NEW JOURNAL OF PHYSICS}, journal = {New J. Phys.}, year = {2006}, volume = {8}, article-number = {243}, doi = {10.1088/1367-2630/8/10/243}, language = {English}, unique-id = {ISI:000241412800010}, web-of-science-categories = {Physics, Multidisciplinary} } |
2006 B Lamine, R Herve, A Lambrecht and S Reynaud "Decoherence induced by stochastic background of gravitational waves on matter-wave interferometers" , Appl. Phys. B-Lasers Opt. 84 575-578. |
Abstract: Stochastic backgrounds of gravitational waves correspond to intrinsic fluctuations of spacetime leading to a universal decoherence mechanism. This mechanism defines an ultimate limit for matter-wave interferometry which sets a natural borderline between classical and quantum worlds. In this letter, we define figures which characterize the decoherence in terms of a coupling between the gravitational environment and the quadrupole of the interferometer. Using the ongoing progresses towards highly sensitive matter-wave interferometry in space, we then discuss the feasibility of experiments aimed at the observation of the decoherence border. |
BibTeX:
@article{Lamine2006, author = {Lamine, B. and Herve, R. and Lambrecht, A. and Reynaud, S.}, title = {Decoherence induced by stochastic background of gravitational waves on matter-wave interferometers}, journal = {APPLIED PHYSICS B-LASERS AND OPTICS}, journal = {Appl. Phys. B-Lasers Opt.}, year = {2006}, volume = {84}, number = {4}, pages = {575-578}, doi = {10.1007/s00340-006-2360-5}, language = {English}, unique-id = {ISI:000240361300005}, web-of-science-categories = {Optics; Physics, Applied} } |
2006 B Lamine, R Herve, A Lambrecht and S Reynaud "Ultimate decoherence border for matter-wave interferometry" , Phys. Rev. Lett. 96 050405 |
Abstract: Stochastic backgrounds of gravitational waves are intrinsic fluctuations of spacetime which lead to an unavoidable decoherence mechanism. This mechanism manifests itself as a degradation of the contrast of quantum interferences. It defines an ultimate decoherence border for matter-wave interferometry using larger and larger molecules. We give a quantitative characterization of this border in terms of figures involving the gravitational environment as well as the sensitivity of the interferometer to gravitational waves. The known level of gravitational noise determines the maximal size of the molecular probe for which interferences may remain observable. We discuss the relevance of this result in the context of ongoing progresses towards more and more sensitive matter-wave interferometry. |
BibTeX:
@article{Lamine2006a, author = {Lamine, B and Herve, R and Lambrecht, A and Reynaud, S}, title = {Ultimate decoherence border for matter-wave interferometry}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2006}, volume = {96}, number = {5}, article-number = {050405}, doi = {10.1103/PhysRevLett.96.050405}, language = {English}, unique-id = {ISI:000235252200005}, web-of-science-categories = {Physics, Multidisciplinary} } |
2006 P Neto, A Lambrecht and S Reynaud "Roughness correction in the Casimir effect with metallic plates" , J. Phys. A-Math. Gen. 39 6517-6523. |
Abstract: We compute the second-order roughness correction to the Casimir energy for two parallel metallic plates. We compare the proximity force and scattering approaches, showing that the former is obtained analytically in the limit of very smooth surfaces by neglecting non-specular reflections. We calculate the discrepancy between the two approaches for some typical numerical examples. |
BibTeX:
@article{Neto2006, author = {Neto, PAM and Lambrecht, A and Reynaud, S}, title = {Roughness correction in the Casimir effect with metallic plates}, journal = {JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL}, journal = {J. Phys. A-Math. Gen.}, year = {2006}, volume = {39}, number = {21}, pages = {6517-6523}, doi = {10.1088/0305-4470/39/21/S49}, language = {English}, unique-id = {ISI:000238384200050}, web-of-science-categories = {Physics, Multidisciplinary; Physics, Mathematical} } |
2006 I Pirozhenko, A Lambrecht and VB Svetovoy "Sample dependence of the Casimir force" , New J. Phys. 8 238 |
Abstract: We have analysed available optical data for Au in the mid-infrared range which is important for a precise prediction of the Casimir force. Significant variation of the data demonstrates genuine sample dependence of the dielectric function. We demonstrate that the Casimir force is largely determined by the material properties in the low frequency domain and argue that therefore the precise values of the Drude parameters are crucial for an accurate evaluation of the force. These parameters can be estimated by two different methods, either by fitting real and imaginary parts of the dielectric function at low frequencies, or via a Kramers-Kronig analysis based on the imaginary part of the dielectric function in the extended frequency range. Both methods lead to very similar results. We show that the variation of the Casimir force calculated with the use of different optical data can be as large as 5% and at any rate cannot be ignored. To have a reliable prediction of the force with a precision of 1 one has to measure the optical properties of metallic films used for the force measurement. |
BibTeX:
@article{Pirozhenko2006, author = {Pirozhenko, I. and Lambrecht, A. and Svetovoy, V. B.}, title = {Sample dependence of the Casimir force}, journal = {NEW JOURNAL OF PHYSICS}, journal = {New J. Phys.}, year = {2006}, volume = {8}, article-number = {238}, doi = {10.1088/1367-2630/8/10/238}, language = {English}, unique-id = {ISI:000241412800005}, web-of-science-categories = {Physics, Multidisciplinary} } |
2006 R Rodrigues, P Neto, A Lambrecht and S Reynaud "Lateral Casimir force beyond the proximity-force approximation" , Phys. Rev. Lett. 96 100402 |
Abstract: We argue that the appropriate variable to study a nontrivial geometry dependence of the Casimir force is the lateral component of the Casimir force, which we evaluate between two corrugated metallic plates outside the validity of the proximity-force approximation. The metallic plates are described by the plasma model, with arbitrary values for the plasma wavelength, the plate separation, and the corrugation period, the corrugation amplitude remaining the smallest length scale. Our analysis shows that in realistic experimental situations the proximity-force approximation overestimates the force by up to 30 |
BibTeX:
@article{Rodrigues2006, author = {Rodrigues, RB and Neto, PAM and Lambrecht, A and Reynaud, S}, title = {Lateral Casimir force beyond the proximity-force approximation}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2006}, volume = {96}, number = {10}, article-number = {100402}, doi = {10.1103/PhysRevLett.96.100402}, language = {English}, unique-id = {ISI:000236062800003}, web-of-science-categories = {Physics, Multidisciplinary} } |
2006 RB Rodrigues, PAM Neto, A Lambrecht and S Reynaud "Vacuum-induced torque between corrugated metallic plates" , Europhys. Lett. 76 822-828. |
Abstract: We study the torque arising between two corrugated metallic plates due to the interaction with electromagnetic vacuum. This Casimir torque can be measured with torsion pendulum techniques for separation distances as large as 1 mu m. It allows one to probe the non-trivial geometry dependence of the Casimir energy in a configuration which can be evaluated theoretically with accuracy. In the optimal experimental configuration, the commonly used proximity force approximation turns out to overestimate the torque by a factor 2 or larger. |
BibTeX:
@article{Rodrigues2006a, author = {Rodrigues, R. B. and Neto, P. A. Maia and Lambrecht, A. and Reynaud, S.}, title = {Vacuum-induced torque between corrugated metallic plates}, journal = {EUROPHYSICS LETTERS}, journal = {Europhys. Lett.}, year = {2006}, volume = {76}, number = {5}, pages = {822-828}, doi = {10.1209/epl/i2006-10340-1}, language = {English}, unique-id = {ISI:000242941000013}, web-of-science-categories = {Physics, Multidisciplinary} } |
2006 P Wolf, P Lemonde, A Lambrecht, S Bize, A Landragin and A Clairon "From optical lattice clocks to the measurement of forces in the Casimir regime" , In International Frequency Control Symposium. 83-92. |
Abstract: We propose a novel experiment based on atoms trapped close to a macroscopic surface, to study the interactions between the atoms and the surface at very small separations (0.6 to 10 mu m). In this range the dominant potential is the QED interaction (Casimir-Polder and Van der Waals) between the surface and the atom. Additionally, several theoretical models suggest the possibility of Yukawa type potentials with sub-mm range, arising from new physics related to gravity. We propose a set-up very similar to neutral atom optical lattice clocks, but with the atoms trapped in lattice sites close to the reflecting mirror. A sequence of pulses of the probe laser at different frequencies is then used to create an interferometer with a coherent superposition between atomic states at different distances from the mirror (in different lattice sites). Assuming atom interferometry state of the art measurement of the phase difference and a duration of the superposition of about 0.1s we expect to be able to measure the potential difference between separated states with an uncertainty of about 10(-4) Hz. A preliminary analysis of systematic effects for different atoms (Sr, Yb, Rb, Cs) indicates no fundamentally limiting effect at the same level of uncertainty, but does influence the choice of atom and isotope. Based on those estimates, we expect that such an experiment would improve the best existing measurements of the atom-wall QED interaction by >= 2 orders of magnitude, whilst gaining up to 4 orders of magnitude on the best present limits on new interactions in the range between 100 nm and 100 mu m. |
BibTeX:
@inproceedings{Wolf2006, author = {Wolf, Peter and Lemonde, Pierre and Lambrecht, Astrid and Bize, Sebastien and Landragin, Arnaud and Clairon, Andre}, title = {From optical lattice clocks to the measurement of forces in the Casimir regime}, booktitle = {International Frequency Control Symposium}, year = {2006}, pages = {83-92}, language = {English}, unique-id = {ISI:000243684700014}, web-of-science-categories = {Engineering, Electrical & Electronic; Instruments & Instrumentation; Materials Science, Multidisciplinary; Optics} } |
2005 T Coudreau, C Fabre and S Reynaud "An introduction to quantum optics" , In Optics in Astrophysics. 198 351-358. |
Abstract: The statistical properties of the electromagnetic field find their origin in its quantum nature. While most experiments can be interpreted relying on classical electrodynamics, in the past thirty years, many experiments need a quantum description of the electromagnetic field. This gives rises to distinct statistical properties. |
BibTeX:
@inproceedings{Coudreau2005, author = {Coudreau, T and Fabre, C and Reynaud, S}, title = {An introduction to quantum optics}, booktitle = {Optics in Astrophysics}, year = {2005}, volume = {198}, pages = {351-358}, language = {English}, unique-id = {ISI:000235464500021}, web-of-science-categories = {Astronomy & Astrophysics; Optics} } |
2005 R Guerout, P Bunker, P Jensen and W Kraemer "A calculation of the rovibronic energies and spectrum of the (B)over-tilde(1)A(1) electronic state of SiH2" , J. Chem. Phys. 123 244312 |
Abstract: The (B) over tilde (1)A(1) electronic state of silylene (SiH2) is the second excited singlet state of the molecule and, like the analogous c state of methylene (CH2), it is quasilinear with symmetry (1)Sigma(g)(+) at linearity. This state dissociates to Si(D-1)+H-2((1)Sigma(g)(+)). At equilibrium, the B state of SiH2 has an energy that we calculate to be 0.71 eV above that of the dissociation products. However, there is a barrier to dissociation that allows quasibound rovibrational levels to occur, and some have been observed recently [Y. Muramoto , J. Chem. Phys. 122, 154302 (2005)]. Starting with our analytical ab initio potential-energy surface, we adjusted it in a fitting to the experimental term values in order to determine the optimum potential-energy function in the bound region. This potential has a C-2v equilibrium structure with a SiH bond length of 1.459 angstrom and a bond angle of 165.4 degrees; the barrier to linearity is only 129 cm(-1). Using the optimized potential-energy surface we calculate B-state term values, and using our calculated y and z dipole moment surfaces, we simulate the rotation-vibration spectrum of the state in order to assist in the detection of the matrix isolation spectrum. (c) 2005 American Institute of Physics. |
BibTeX:
@article{Guerout2005, author = {Guerout, R and Bunker, PR and Jensen, P and Kraemer, WP}, title = {A calculation of the rovibronic energies and spectrum of the (B)over-tilde(1)A(1) electronic state of SiH2}, journal = {JOURNAL OF CHEMICAL PHYSICS}, journal = {J. Chem. Phys.}, year = {2005}, volume = {123}, number = {24}, article-number = {244312}, doi = {10.1063/1.2139676}, language = {English}, unique-id = {ISI:000234340100017}, web-of-science-categories = {Physics, Atomic, Molecular & Chemical} } |
2005 F Intravaia and A Lambrecht "Surface plasmon modes and the Casimir energy" , Phys. Rev. Lett. 94 110404 |
Abstract: We show the influence of surface plasmons on the Casimir effect between two plane parallel metallic mirrors at arbitrary distances. Using the plasma model to describe the optical response of the metal, we express the Casimir energy as a sum of contributions associated with evanescent surface plasmon modes and propagative cavity modes. In contrast to naive expectations, the plasmonic mode contribution is essential at all distances in order to ensure the correct result for the Casimir energy. One of the two plasmonic modes gives rise to a repulsive contribution, balancing out the attractive contributions from propagating cavity modes, while both contributions taken separately are much larger than the actual value of the Casimir energy. This also suggests possibilities to tailor the sign of the Casimir force via surface plasmons. |
BibTeX:
@article{Intravaia2005, author = {Intravaia, F and Lambrecht, A}, title = {Surface plasmon modes and the Casimir energy}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2005}, volume = {94}, number = {11}, article-number = {110404}, doi = {10.1103/PhysRevLett.94.110404}, language = {English}, unique-id = {ISI:000227923200004}, web-of-science-categories = {Physics, Multidisciplinary} } |
2005 M Jaekel and S Reynaud "Post-Einsteinian tests of linearized gravitation" , Class. Quantum Gravity 22 2135-2157. |
Abstract: The general relativistic treatment of gravitation can be extended by preserving the geometrical nature of the theory but modifying the form of the coupling between curvature and stress tensors. The gravitation constant is thus replaced by two running coupling constants which depend on scale and differ in the sectors of traceless and traced tensors. When calculated in the solar system in a linearized approximation, the metric is described by two gravitation potentials. This extends the parametrized post-Newtonian (PPN) phenomenological framework while allowing one to preserve compatibility with gravity tests performed in the solar system. Consequences of this extension are drawn here for phenomena correctly treated in the linear approximation. We obtain a Pioneer-like anomaly for probes with an eccentric motion as well as a range dependence of Eddington parameter gamma to be seen in light deflection experiments. |
BibTeX:
@article{Jaekel2005, author = {Jaekel, MT and Reynaud, S}, title = {Post-Einsteinian tests of linearized gravitation}, journal = {CLASSICAL AND QUANTUM GRAVITY}, journal = {Class. Quantum Gravity}, year = {2005}, volume = {22}, number = {11}, pages = {2135-2157}, doi = {10.1088/0264-9381/22/11/015}, language = {English}, unique-id = {ISI:000230381300016}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Particles & Fields} } |
2005 M Jaekel and S Reynaud "Gravity tests in the solar system and the pioneer anomaly" , Mod. Phys. Lett. A 20 1047-1055. |
Abstract: We build up a new phenomenological framework associated with a minimal generalization of Einsteinian gravitation theory. When linearity, stationarity and isotropy are assumed, tests in the solar system are characterized by two potentials which generalize respectively the Newton potential and the parameter γ of parametrized post-Newtonian formalism. The new framework has the capability to account for the Pioneer anomaly while preserving the compatibility of other gravity tests with general relativity. |
BibTeX:
@article{Jaekel2005a, author = {Jaekel, MT and Reynaud, S}, title = {Gravity tests in the solar system and the pioneer anomaly}, journal = {MODERN PHYSICS LETTERS A}, journal = {Mod. Phys. Lett. A}, year = {2005}, volume = {20}, number = {14}, pages = {1047-1055}, doi = {10.1142/S0217732305017275}, language = {English}, unique-id = {ISI:000229569100003}, web-of-science-categories = {Physics, Nuclear; Physics, Particles & Fields; Physics, Mathematical} } |
2005 A Lambrecht "Electromagnetic pulses from an oscillating high-finesse cavity: possible signatures for dynamic Casimir effect experiments" , J. Opt. B-Quantum Semicl. Opt. 7 S3-S10. |
Abstract: Vacuum field fluctuations exert radiation pressure on mirrors in quantum vacuum. For a pair of mirrors this effect is well known as the Casimir effect. When a single mirror is moving in vacuum, radiation pressure leads to a dissipative force which opposes itself to the mirror's motion. Accordingly the electromagnetic field does not remain in the vacuum state but photons are emitted by the mirror into vacuum. This paper describes the photon emission of a high-finesse cavity oscillating globally in quantum vacuum. Common features and differences with usual parametric processes in quantum optics are discussed. Interesting signatures of quantum radiation like pulse shaping and frequency up-conversion are predicted, which could be used to experimentally demonstrate motion-induced dissipative effects. The feasibility of an experimental realization is discussed at the end of the paper. |
BibTeX:
@article{Lambrecht2005, author = {Lambrecht, A}, title = {Electromagnetic pulses from an oscillating high-finesse cavity: possible signatures for dynamic Casimir effect experiments}, journal = {JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS}, journal = {J. Opt. B-Quantum Semicl. Opt.}, year = {2005}, volume = {7}, number = {3}, pages = {S3-S10}, doi = {10.1088/1464-4266/7/3/001}, language = {English}, unique-id = {ISI:000228257000002}, web-of-science-categories = {Optics; Physics, Applied} } |
2005 A Lambrecht, V Nesvizhevsky, R Onofrio and S Reynaud "Development of a high-sensitivity torsional balance for the study of the Casimir force in the 1-10 micrometre range" , Class. Quantum Gravity 22 5397-5406. |
Abstract: We discuss a proposal to measure the Casimir force in the parallel plate configuration in the 1-10 mu m range via a high-sensitivity torsional balance. This will allow for the measurement of the thermal contribution to the Casimir force thereby discriminating between the various approaches discussed so far. Accurate control of the Casimir force in this length scale is also required to improve the limits to the existence of non-Newtonian forces in the micrometre range predicted by unification models of fundamental interactions. |
BibTeX:
@article{Lambrecht2005a, author = {Lambrecht, A and Nesvizhevsky, VV and Onofrio, R and Reynaud, S}, title = {Development of a high-sensitivity torsional balance for the study of the Casimir force in the 1-10 micrometre range}, journal = {CLASSICAL AND QUANTUM GRAVITY}, journal = {Class. Quantum Gravity}, year = {2005}, volume = {22}, number = {24}, pages = {5397-5406}, doi = {10.1088/0264-9381/22/24/012}, language = {English}, unique-id = {ISI:000234626400012}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Particles & Fields} } |
2005 P Neto, A Lambrecht and S Reynaud "Casimir effect with rough metallic mirrors" , Phys. Rev. A 72 012115 |
Abstract: We calculate the second-order roughness correction to the Casimir energy for two parallel metallic mirrors. Our results may also be applied to the plane-sphere geometry used in most experiments. The metallic mirrors are described by the plasma model, with arbitrary values for the plasma wavelength, the mirror separation, and the roughness correlation length, with the roughness amplitude remaining the smallest length scale for perturbation theory to hold. From the analysis of the intracavity field fluctuations, we obtain the Casimir energy correction in terms of generalized reflection operators, which account for diffraction and polarization coupling in the scattering by the rough surfaces. We present simple analytical expressions for several limiting cases, as well as numerical results that allow for a reliable calculation of the roughness correction in real experiments. The correction is larger than the result of the proximity force approximation, which is obtained from our theory as a limiting case (very smooth surfaces). |
BibTeX:
@article{Neto2005, author = {Neto, PAM and Lambrecht, A and Reynaud, S}, title = {Casimir effect with rough metallic mirrors}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2005}, volume = {72}, number = {1}, article-number = {012115}, doi = {10.1103/PhysRevA.72.012115}, language = {English}, unique-id = {ISI:000230887300028}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2005 P Neto, A Lambrecht and S Reynaud "Roughness correction to the Casimir force: Beyond the proximity force approximation" , Europhys. Lett. 69 924-930. |
Abstract: We calculate the roughness correction to the Casimir effect in the parallel plates geometry, for metallic plates described by the plasma model. The calculation is perturbative in the roughness amplitude, with otherwise arbitrary values for the plasma wavelength, the plate separation and the roughness correlation length. The correction is found to be always larger than the result obtained in the Proximity Force Approximation. |
BibTeX:
@article{Neto2005a, author = {Neto, PAM and Lambrecht, A and Reynaud, S}, title = {Roughness correction to the Casimir force: Beyond the proximity force approximation}, journal = {EUROPHYSICS LETTERS}, journal = {Europhys. Lett.}, year = {2005}, volume = {69}, number = {6}, pages = {924-930}, doi = {10.1209/epl/i2004-10433-9}, language = {English}, unique-id = {ISI:000228445900011}, web-of-science-categories = {Physics, Multidisciplinary} } |
2005 S Reynaud and M Jaekel "Testing the Newton law at long distances" , Int. J. Mod. Phys. A 20 2294-2303. |
Abstract: Experimental tests of Newton law put stringent constraints on potential deviations from standard theory with ranges from the millimeter to the size of planetary orbits. Windows however remain open for short range deviations, below the millimeter, as well as long range ones, of the order of or larger than the size of the solar system. We discuss here the relation between long range tests of the Newton law and the anomaly recorded on Pioneer 10/11 probes. |
BibTeX:
@article{Reynaud2005, author = {Reynaud, S and Jaekel, MT}, title = {Testing the Newton law at long distances}, journal = {INTERNATIONAL JOURNAL OF MODERN PHYSICS A}, journal = {Int. J. Mod. Phys. A}, year = {2005}, volume = {20}, number = {11}, pages = {2294-2303}, doi = {10.1142/S0217751X05024523}, language = {English}, unique-id = {ISI:000229549900013}, web-of-science-categories = {Physics, Nuclear; Physics, Particles & Fields} } |
2005 N Treps, V Delaubert, A Maitre, J Courty and C Fabre "Quantum noise in multipixel image processing" , Phys. Rev. A 71 013820 |
Abstract: We consider the general problem of the quantum noise in a multipixel measurement of an optical image. We first give a precise criterion in order to characterize intrinsic single-mode and multimode light. Then, using a transverse mode decomposition, for each type of possible linear combination of the pixels' outputs we give the exact expression of the detection mode, i.e., the mode carrying the noise. We give also the only way to reduce the noise in one or several simultaneous measurements. |
BibTeX:
@article{Treps2005, author = {Treps, N and Delaubert, V and Maitre, A and Courty, JM and Fabre, C}, title = {Quantum noise in multipixel image processing}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2005}, volume = {71}, number = {1}, article-number = {013820}, doi = {10.1103/PhysRevA.71.013820}, language = {English}, unique-id = {ISI:000227283300146}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2004 R Alleaume, F Treussart, J Courty and J Roch "Photon statistics characterization of a single-photon source" , New J. Phys. 6 85 |
Abstract: In a recent experiment, we reported the time-domain intensity noise measurement of a single-photon source relying on single-molecule fluorescence control. In this paper, we present data processing starting from photocount timestamps. The theoretical analytical expression of the time-dependent Mandel parameter Q( T) of an intermittent single-photon source is derived from ON <----> OFF dynamics. Finally, source intensity noise analysis, using the Mandel parameter, is quantitatively compared with the usual approach relying on the time autocorrelation function, both methods yielding the same molecular dynamical parameters. |
BibTeX:
@article{Alleaume2004, author = {Alleaume, R and Treussart, F and Courty, JM and Roch, JF}, title = {Photon statistics characterization of a single-photon source}, journal = {NEW JOURNAL OF PHYSICS}, journal = {New J. Phys.}, year = {2004}, volume = {6}, article-number = {85}, doi = {10.1088/1367-2630/6/1/085}, language = {English}, unique-id = {ISI:000222971800001}, web-of-science-categories = {Physics, Multidisciplinary} } |
2004 R Guerout, M Jungen and C Jungen "Ab initio molecular quantum defect theory: II. Rydberg and continuum states of NO" , J. Phys. B-At. Mol. Opt. Phys. 37 3057-3073. |
Abstract: The artificial well potential (AWP) formalism presented in the preceding paper which combines ab initio quantum chemistry with multichannel quantum defect theory is illustrated here with calculations of the Rydberg and continuum states of NO. Total energies, effective quantum numbers and transition intensities have been evaluated. |
BibTeX:
@article{Guerout2004, author = {Guerout, R and Jungen, M and Jungen, C}, title = {Ab initio molecular quantum defect theory: II. Rydberg and continuum states of NO}, journal = {JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS}, journal = {J. Phys. B-At. Mol. Opt. Phys.}, year = {2004}, volume = {37}, number = {15}, pages = {3057-3073}, doi = {10.1088/0953-4075/37/15/005}, language = {English}, unique-id = {ISI:000223595900006}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2004 R Guerout, M Jungen and C Jungen "Ab initio molecular quantum defect theory: I. Method of artificial well potentials" , J. Phys. B-At. Mol. Opt. Phys. 37 3043-3055. |
Abstract: A new method is presented for the calculation of highly excited bound and continuum molecular electronic wavefunctions. It combines the methods of ab initio quantum chemistry with multichannel quantum defect theory. The approach is based on artificial well potentials (AWPs) designed such that square-integrable Cartesian Gaussian basis sets can be used for the calculation of continuum states at arbitrary energy. The method will be illustrated in the following paper by an application to the NO molecule. |
BibTeX:
@article{Guerout2004a, author = {Guerout, R and Jungen, M and Jungen, C}, title = {Ab initio molecular quantum defect theory: I. Method of artificial well potentials}, journal = {JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS}, journal = {J. Phys. B-At. Mol. Opt. Phys.}, year = {2004}, volume = {37}, number = {15}, pages = {3043-3055}, doi = {10.1088/0953-4075/37/15/004}, language = {English}, unique-id = {ISI:000223595900005}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2004 A Heidmann, J Courty and M Pinard "Quantum locking of mirrors in interferometric measurements" , Class. Quantum Gravity 21 S1053-S1058. |
Abstract: We discuss the use of active control to reduce mirror position fluctuations at the quantum level. We have shown in a recent experiment that it is possible to reduce the thermal noise of a mirror by measuring and controlling its motion with an optomechanical sensor based on a high-finesse optical cavity. This approach can be extended to lock the mirror motion at the quantum level, and to suppress the quantum effects of radiation pressure in interferometric measurements such as gravitational-wave detectors. The sensitivity improvement is furthermore independent of losses in the interferometer. |
BibTeX:
@article{Heidmann2004, author = {Heidmann, A and Courty, JM and Pinard, M}, title = {Quantum locking of mirrors in interferometric measurements}, journal = {CLASSICAL AND QUANTUM GRAVITY}, journal = {Class. Quantum Gravity}, year = {2004}, volume = {21}, number = {5, SI}, pages = {S1053-S1058}, doi = {10.1088/0264-9381/21/5/100}, language = {English}, unique-id = {ISI:000220344800101}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Particles & Fields} } |
2004 A Heidmann, J Courty, M Pinard and J Lebars "Beating quantum limits in interferometers with quantum locking of mirrors" , J. Opt. B-Quantum Semicl. Opt. 6 S684-S690. |
Abstract: The sensitivity in interferometric measurements such as those made by gravitational-wave detectors is ultimately limited by the quantum noise of light. We discuss the use of feedback mechanisms to reduce the quantum effects of radiation pressure. Recent experiments have shown that it is possible to reduce the thermal motion of a mirror by cold damping. The mirror motion is measured with an optomechanical sensor based on a high-finesse cavity, and reduced by a feedback loop. We show that this technique can be extended to lock the mirror at the quantum level. In gravitational-wave interferometers with Fabry-Perot cavities in each arm, it is even possible to use a single feedback mechanism to lock one cavity mirror on the other. This quantum locking greatly improves the sensitivity of the interferometric measurement. It is furthermore insensitive to imperfections such as losses in the interferometer. |
BibTeX:
@article{Heidmann2004a, author = {Heidmann, A and Courty, JM and Pinard, M and Lebars, J}, title = {Beating quantum limits in interferometers with quantum locking of mirrors}, journal = {JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS}, journal = {J. Opt. B-Quantum Semicl. Opt.}, year = {2004}, volume = {6}, number = {8, SI}, pages = {S684-S690}, doi = {10.1088/1464-4266/6/8/009}, language = {English}, unique-id = {ISI:000225565000011}, web-of-science-categories = {Optics; Physics, Applied} } |
2004 M Jungen, M Lehner, R Guerout and J Stalder "Collisions of excited Na atoms with N-2, C2H2 and N2O molecules. Surface-hopping calculation of the Na(3p) fine structure population" , Phys. Chem. Chem. Phys. 6 1666-1671. |
Abstract: The results of optical collision experiments: fine structure population ratios and polarization alignment angles obtained from scattering of Na atoms which are optically 3s --> 3p excited during the collision with N-2, C2H2 and N2O molecules, have been simulated numerically and analysed using quantum chemically computed potential energy surfaces, classical trajectory calculations and the semiclassical surface hopping method combined with a specially developed diabatization procedure. |
BibTeX:
@article{Jungen2004, author = {Jungen, M and Lehner, M and Guerout, R and Stalder, J}, title = {Collisions of excited Na atoms with N-2, C2H2 and N2O molecules. Surface-hopping calculation of the Na(3p) fine structure population}, journal = {PHYSICAL CHEMISTRY CHEMICAL PHYSICS}, journal = {Phys. Chem. Chem. Phys.}, year = {2004}, volume = {6}, number = {8}, pages = {1666-1671}, doi = {10.1039/b313781c}, language = {English}, unique-id = {ISI:000221455200005}, web-of-science-categories = {Chemistry, Physical; Physics, Atomic, Molecular & Chemical} } |
2004 A Lambrecht, C Genet, F Intravaia and S Reynaud "The Casimir effect - Theory and experience" , J. Physique IV 119 43-50. |
BibTeX:
@article{Lambrecht2004, author = {Lambrecht, A and Genet, C and Intravaia, F and Reynaud, S}, title = {The Casimir effect - Theory and experience}, journal = {JOURNAL DE PHYSIQUE IV}, journal = {J. Physique IV}, year = {2004}, volume = {119}, pages = {43-50}, doi = {10.1051/jp4:2004119007}, language = {French}, unique-id = {ISI:000225958200010}, web-of-science-categories = {Physics, Multidisciplinary} } |
2004 B Lamine, A Lambrecht, M Jaekel and S Reynaud "Relic gravitational wave background and the isotropy of space" , Class. Quantum Gravity 21 S1209-S1214. |
Abstract: The relic gravitational wave background is expected to be statistically isotropic, but the actual value of the associated spacetime metric should break isotropy. We propose to detect the resulting anisotropy by using an optical interferometer mounted on a rotating platform. |
BibTeX:
@article{Lamine2004, author = {Lamine, B and Lambrecht, A and Jaekel, MT and Reynaud, S}, title = {Relic gravitational wave background and the isotropy of space}, journal = {CLASSICAL AND QUANTUM GRAVITY}, journal = {Class. Quantum Gravity}, year = {2004}, volume = {21}, number = {5, SI}, pages = {S1209-S1214}, doi = {10.1088/0264-9381/21/5/121}, language = {English}, unique-id = {ISI:000220344800122}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Particles & Fields} } |
2004 S Reynaud, A Lambrecht and C Genet "The Casimir force between real mirrors at non zero temperature" , In Quantum field theory under the influence of external conditions. 36-43. |
Abstract: The Casimir force between dissipative metallic mirrors at non zero temperature has recently given rise to contradictory claims which have raised doubts about the theoretical expression of the force. In order to contribute to the resolution of this difficulty, we come back to the derivation of the force from basic principles of the quantum theory of lossy optical cavities. We obtain an expression which is valid for arbitrary mirrors, including dissipative ones, characterized by frequency dependent reflection amplitudes. |
BibTeX:
@inproceedings{Reynaud2004, author = {Reynaud, S and Lambrecht, A and Genet, C}, title = {The Casimir force between real mirrors at non zero temperature}, booktitle = {Quantum field theory under the influence of external conditions}, year = {2004}, pages = {36-43}, language = {English}, unique-id = {ISI:000224078900007}, web-of-science-categories = {Physics, Particles & Fields; Physics, Mathematical} } |
2004 S Reynaud, B Lamine, A Lambrecht, P Neto and M Jaekel "HYPER and gravitational decoherence" , Gen. Relativ. Gravit. 36 2271-2288. |
Abstract: We study the decoherence process associated with the scattering of stochastic backgrounds of gravitational waves. We show that it has a negligible influence on HYPER-like atomic interferometers although it may dominate decoherence of macroscopic motions, such as the planetary motion of the Moon around the Earth. |
BibTeX:
@article{Reynaud2004a, author = {Reynaud, S and Lamine, B and Lambrecht, A and Neto, PM and Jaekel, MT}, title = {HYPER and gravitational decoherence}, journal = {GENERAL RELATIVITY AND GRAVITATION}, journal = {Gen. Relativ. Gravit.}, year = {2004}, volume = {36}, number = {10}, pages = {2271-2288}, doi = {10.1023/B:GERG.0000046183.31629.02}, language = {English}, unique-id = {ISI:000225322300006}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Particles & Fields} } |
2004 F Treussart, R Alleaume, J-M Courty and J-F Roch "Emission properties of a single photon source" , Phys. Scr. T112 95-98. |
Abstract: We report on the realization of a single photon source relying on the pulsed excitation of a single organic molecule at room temperature, and the study of its intensity fluctuations over 4 orders of magnitude of the observation time scale. On a time scale of a few excitation periods, sub-poissonian statistics is clearly observed and the probability of multiphoton events is 10 times smaller than for equivalent Poissonian pulses. An excess of noise appears on longer timescale, due to the blinking produced by the molecular triplet state. |
BibTeX:
@article{Treussart2004, author = {Treussart, Francois and Alleaume, Romain and Courty, Jean-Michel and Roch, Jean-Francois}, title = {Emission properties of a single photon source}, journal = {PHYSICA SCRIPTA}, journal = {Phys. Scr.}, year = {2004}, volume = {T112}, pages = {95-98}, doi = {10.1238/Physica.Topical.112a00095}, language = {English}, unique-id = {ISI:000204271800014}, web-of-science-categories = {Physics, Multidisciplinary} } |
2003 J Courty, A Heidmann and M Pinard "Back-action cancellation in interferometers by quantum locking" , Europhys. Lett. 63 226-232. |
Abstract: We show that back-action noise in interferometric measurements such as gravitational-waves detectors can be completely suppressed by a local control of mirrors motion. An optomechanical sensor with an optimized measurement strategy is used to monitor mirror displacements. A feedback loop then eliminates radiation-pressure effects without adding noise. This very efficient technique leads to an increased sensitivity for the interferometric measurement, which becomes only limited by phase noise. Back-action cancellation is furthermore insensitive to losses in the interferometer. |
BibTeX:
@article{Courty2003, author = {Courty, JM and Heidmann, A and Pinard, M}, title = {Back-action cancellation in interferometers by quantum locking}, journal = {EUROPHYSICS LETTERS}, journal = {Europhys. Lett.}, year = {2003}, volume = {63}, number = {2}, pages = {226-232}, doi = {10.1209/epl/i2003-00527-x}, language = {English}, unique-id = {ISI:000184099100011}, web-of-science-categories = {Physics, Multidisciplinary} } |
2003 J Courty, A Heidmann and M Pinard "Quantum locking of mirrors in interferometers" , Phys. Rev. Lett. 90 083601 |
Abstract: We show that quantum noise in very sensitive interferometric measurements such as gravitational-wave detectors can be drastically modified by quantum feedback. We present a new scheme based on active control to lock the motion of a mirror to a reference mirror at the quantum level. This simple technique allows one to reduce quantum effects of radiation pressure and to greatly enhance the sensitivity of the detection. |
BibTeX:
@article{Courty2003a, author = {Courty, JM and Heidmann, A and Pinard, M}, title = {Quantum locking of mirrors in interferometers}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2003}, volume = {90}, number = {8}, article-number = {083601}, doi = {10.1103/PhysRevLett.90.083601}, language = {English}, unique-id = {ISI:000181289300014}, web-of-science-categories = {Physics, Multidisciplinary} } |
2003 C Genet, A Lambrecht, P Neto and S Reynaud "The Casimir force between rough metallic plates" , Europhys. Lett. 62 484-490. |
Abstract: The Casimir force between two metallic plates is affected by their roughness state. This effect is usually calculated through the so-called ``proximity force approximation'' which is only valid for small enough wave vectors in the spectrum of the roughness pro. le. We introduce here a more general description with a wave-vector-dependent roughness sensitivity of the Casimir effect. Since the proximity force approximation underestimates the effect, a measurement of the roughness spectrum is needed to achieve the desired level of accuracy in the theory-experiment comparison. |
BibTeX:
@article{Genet2003, author = {Genet, C and Lambrecht, A and Neto, PAM and Reynaud, S}, title = {The Casimir force between rough metallic plates}, journal = {EUROPHYSICS LETTERS}, journal = {Europhys. Lett.}, year = {2003}, volume = {62}, number = {4}, pages = {484-490}, doi = {10.1209/epl/i2003-00374-9}, language = {English}, unique-id = {ISI:000182961600005}, web-of-science-categories = {Physics, Multidisciplinary} } |
2003 C Genet, A Lambrecht and S Reynaud "Casimir force and the quantum theory of lossy optical cavities" , Phys. Rev. A 67 043811 |
Abstract: We present a derivation of the Casimir force between two parallel plane mirrors at zero temperature. The two mirrors and the cavity they enclose are treated as quantum optical networks. They are, in general, lossy and characterized by frequency-dependent reflection amplitudes. The additional fluctuations accompanying losses are deduced from expressions of the optical theorem. A general proof is given for the theorem relating the spectral density inside the cavity to the reflection amplitudes seen by the inner fields. This density determines the vacuum radiation pressure and, therefore, the Casimir force. The force is obtained as an integral over the real frequencies, including the contribution of evanescent waves besides that of ordinary waves, and then as an integral over imaginary frequencies. The demonstration relies only on general properties obeyed by real mirrors which also enforce general constraints for the variation of the Casimir force. |
BibTeX:
@article{Genet2003a, author = {Genet, C and Lambrecht, A and Reynaud, S}, title = {Casimir force and the quantum theory of lossy optical cavities}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2003}, volume = {67}, number = {4}, article-number = {043811}, doi = {10.1103/PhysRevA.67.043811}, language = {English}, unique-id = {ISI:000182604300120}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2003 A Heidmann, J Courty and M Pinard "Quantum locking of mirrors in interferometric measurements" , In Fluctuations and noise in photonics and quantum optics. 5111 36-47. |
Abstract: We discuss the use of active. control to reduce mirrors position fluctuations at the quantum level. Recent experiments have shown that it. is possible to reduce the thermal motion of a mirror by cold damping. The mirror motion is measured with an optomechanical sensor based on an high-finesse optical cavity, and corrected by a feedback loop. We show that this approach can be extended to lock the mirror motion at the quantum level and we propose to use this quantum locking technique to reduce the noise in interferometric measurements such as gravitational-waves detectors. We analyze the back-action effects of the optomechanical sensor and show that quantum limits can be transferred from the sensor measurement to the interferometric one. This simple technique allows one to suppress the quantum effects of radiation pressure in the interferometer and to greatly enhance its sensitivity. The effect is furthermore insensitive to losses in the interferometer. |
BibTeX:
@inproceedings{Heidmann2003, author = {Heidmann, A and Courty, JM and Pinard, M}, title = {Quantum locking of mirrors in interferometric measurements}, booktitle = {Fluctuations and noise in photonics and quantum optics}, year = {2003}, volume = {5111}, pages = {36-47}, doi = {10.1117/12.492921}, language = {English}, unique-id = {ISI:000184147200006}, web-of-science-categories = {Optics} } |
2003 A Lambrecht and S Reynaud
"Recent experiments on the Casimir effect: Description and analysis"
, In Poincare seminar 2002: vacuum energy - renormalization. 30
109-126.
[BibTeX] |
BibTeX:
@inproceedings{Lambrecht2003, author = {Lambrecht, A and Reynaud, S}, title = {Recent experiments on the Casimir effect: Description and analysis}, booktitle = {Poincare seminar 2002: vacuum energy - renormalization}, year = {2003}, volume = {30}, pages = {109-126}, language = {English}, unique-id = {ISI:000183726700005}, web-of-science-categories = {Physics, Applied; Physics, Particles & Fields; Physics, Mathematical} } |
2003 B Lamine, A Lambrecht, S Reynaud and M Jaekel "Decoherence by stochastic gravitational waves" , In Squeezed States and Uncertainty Relations. 218-225. |
Abstract: We study the scattering of stochastic background of gravitational waves by atomic interferometers. We show that it has a negligible effect on existing interferometers and hence does not destroy the interference signal. In addition, we exhibit fundamental limitations concerning the possibility to perform interference experiments using large systems. |
BibTeX:
@inproceedings{Lamine2003, author = {Lamine, B and Lambrecht, A and Reynaud, S and Jaekel, MT}, title = {Decoherence by stochastic gravitational waves}, booktitle = {Squeezed States and Uncertainty Relations}, year = {2003}, pages = {218-225}, language = {English}, unique-id = {ISI:000224075600032}, web-of-science-categories = {Optics; Physics, Particles & Fields; Physics, Mathematical} } |
2002 A Baas, J Karr, J Courty and E Giacobino "Parametric amplification of polaritons in surface-emitting lasers" , J. Physique IV 12 261-262. |
BibTeX:
@article{Baas2002, author = {Baas, A and Karr, JP and Courty, JM and Giacobino, E}, title = {Parametric amplification of polaritons in surface-emitting lasers}, journal = {JOURNAL DE PHYSIQUE IV}, journal = {J. Physique IV}, year = {2002}, volume = {12}, number = {PR5}, pages = {261-262}, doi = {10.1051/jp420020152}, language = {French}, unique-id = {ISI:000177261500063}, web-of-science-categories = {Physics, Multidisciplinary} } |
2002 C Genet, A Lambrecht and S Reynaud "Correlation between plasma and temperature corrections to the Casimir force" , Int. J. Mod. Phys. A 17 761-766. |
Abstract: When comparing experimental results with theoretical predictions of the Casimir force, the accuracy of the theory is as important as the precision of experiments. Here we evaluate the Casimir force when finite conductivity of the reflectors and finite temperature are simultaneously taken into account. We show that these two corrections are correlated, i.e. that they can not, in principle, be evaluated separately and simply multiplied, We estimate the correlation factor which measures the deviation from this common approximation. We focus our attention on the case of smooth and plane plates with a metallic optical response modeled by a plasma model. |
BibTeX:
@article{Genet2002, author = {Genet, C and Lambrecht, A and Reynaud, S}, title = {Correlation between plasma and temperature corrections to the Casimir force}, journal = {INTERNATIONAL JOURNAL OF MODERN PHYSICS A}, journal = {Int. J. Mod. Phys. A}, year = {2002}, volume = {17}, number = {6-7}, pages = {761-766}, doi = {10.1142/S0217751X0201008X}, language = {English}, unique-id = {ISI:000174916100006}, web-of-science-categories = {Physics, Nuclear; Physics, Particles & Fields} } |
2002 M Jaekel, A Lambrecht and S Reynaud "Quantum vacuum, inertia and gravitation" , New Astron. Rev. 46 727-739. |
Abstract: Since the early developments of quantum theory, vacuum has been recognized to be filled with irreducible zero-point field fluctuations. The corresponding very large energy density, as predicted by quantum theory, conflicts however, with observation of gravitational phenomena on macroscopic scales, a paradox also associated with the cosmological constant problem. This vacuum catastrophe has led to the common view that vacuum fluctuations should not be taken into account as a source of inertia or gravitation. Vacuum fluctuations however, produce observable mechanical effects, like Casimir forces, which are now accurately measured and agree with theoretical predictions. Vacuum fluctuations can also be shown, within the standard framework of quantum theory, to induce effects on motion in vacuum, and to lead to a contribution of Casimir energy to inertia, in conformity with the principles of relativity. Here, we advocate that paradoxes which emerge in an acute way when confronting quantum and relativity theories should rather be considered as positive hints, as they allow to raise questions about relativity of motion in quantum vacuum amenable to experimental confrontation, and also to reconsider the role of vacuum with respect to gravitation. (C) 2002 Elsevier Science B.V. All rights reserved. |
BibTeX:
@article{Jaekel2002, author = {Jaekel, MT and Lambrecht, A and Reynaud, S}, title = {Quantum vacuum, inertia and gravitation}, journal = {NEW ASTRONOMY REVIEWS}, journal = {New Astron. Rev.}, year = {2002}, volume = {46}, number = {12}, pages = {727-739}, doi = {10.1016/S1387-6473(02)00242-7}, language = {English}, unique-id = {ISI:000179429300002}, web-of-science-categories = {Astronomy & Astrophysics} } |
2002 A Lambrecht
"The Casimir effect: a force from nothing" , Phys. World
15
29-32.
[BibTeX] |
BibTeX:
@article{Lambrecht2002, author = {Lambrecht, A}, title = {The Casimir effect: a force from nothing}, journal = {PHYSICS WORLD}, journal = {Phys. World}, year = {2002}, volume = {15}, number = {9}, pages = {29-32}, language = {English}, unique-id = {ISI:000177960900023}, web-of-science-categories = {Physics, Multidisciplinary} } |
2002 B Lamine, M Jaekel and S Reynaud "Gravitational decoherence of atomic interferometers" , Eur. Phys. J. D 20 165-176. |
Abstract: We study the decoherence of atomic interferometers due to the scattering of stochastic gravitational waves. We evaluate the ``direct'' gravitational effect registered by the phase of the matter waves as Well as the ``indirect'' effect registered by the light waves used as beam-splitters and mirrors for the matter waves. Considering as an example the space project HYPER, we show that both effects are negligible for the presently studied interferometers. |
BibTeX:
@article{Lamine2002, author = {Lamine, B and Jaekel, MT and Reynaud, S}, title = {Gravitational decoherence of atomic interferometers}, journal = {EUROPEAN PHYSICAL JOURNAL D}, journal = {Eur. Phys. J. D}, year = {2002}, volume = {20}, number = {2}, pages = {165-176}, doi = {10.1140/epjd/e2002-00126-y}, language = {English}, unique-id = {ISI:000177534500002}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2002 S Reynaud, B Lamine, A Lambrecht, P Neto and M Jaekel "Decoherence and gravitational backgrounds" , Int. J. Mod. Phys. A 17 1003-1012. |
Abstract: We study the decoherence process associated with the scattering of stochastic gravitational waves. We discuss the case of macroscopic systems, such as the planetary motion of the Moon around the Earth, for which gravitational scattering is found to dominate decoherence though it has a negligible influence on damping. This contrast is due to the very high effective temperature of the background of gravitational waves in our galactic environment. |
BibTeX:
@article{Reynaud2002, author = {Reynaud, S and Lamine, B and Lambrecht, A and Neto, PM and Jaekel, MT}, title = {Decoherence and gravitational backgrounds}, journal = {INTERNATIONAL JOURNAL OF MODERN PHYSICS A}, journal = {Int. J. Mod. Phys. A}, year = {2002}, volume = {17}, number = {6-7}, pages = {1003-1012}, doi = {10.1142/S0217751X0201042X}, language = {English}, unique-id = {ISI:000174916100040}, web-of-science-categories = {Physics, Nuclear; Physics, Particles & Fields} } |
2002 F Treussart, R Alleaume, V Le Floc'h, L Xiao, J Courty and J Roch "Direct measurement of the photon statistics of a triggered single photon source" , Phys. Rev. Lett. 89 093601 |
Abstract: We studied intensity fluctuations of a single photon source relying on the pulsed excitation of the fluorescence of a single molecule at room temperature. We directly measured the Mandel parameter Q(T) over 4 orders of magnitude of observation time scale T by recording every photocount. On time scale of a few excitation periods, sub-Poissonian statistics is clearly observed and the probablility of two-photons events is 10 times smaller than Poissonian pulses. On longer times, blinking in the fluorescence, due to the molecular triplet state, produces an excess of noise. |
BibTeX:
@article{Treussart2002, author = {Treussart, F and Alleaume, R and Le Floc'h, V and Xiao, LT and Courty, JM and Roch, JF}, title = {Direct measurement of the photon statistics of a triggered single photon source}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2002}, volume = {89}, number = {9}, article-number = {093601}, doi = {10.1103/PhysRevLett.89.093601}, language = {English}, unique-id = {ISI:000177529000022}, web-of-science-categories = {Physics, Multidisciplinary} } |
2001 J Courty, A Heidmann and M Pinard "Quantum limits of cold damping with optomechanical coupling" , Eur. Phys. J. D 17 399-408. |
Abstract: Thermal noise of a mirror can be reduced by cold damping. The displacement is measured with a high-finesse cavity and controlled with the radiation pressure of a modulated light beam. We establish the general quantum limits of noise in cold damping mechanisms and we show that the optomechanical system allows to reach these limits. Displacement noise can be arbitrarily reduced in a narrow frequency and, In a wide-band analysis we show that thermal fluctuations are reduced as with classical damping whereas quantum zero-point fluctuations are left unchanged. The only limit of cold damping is then due to zero-point energy of the mirror. |
BibTeX:
@article{Courty2001, author = {Courty, JM and Heidmann, A and Pinard, M}, title = {Quantum limits of cold damping with optomechanical coupling}, journal = {EUROPEAN PHYSICAL JOURNAL D}, journal = {Eur. Phys. J. D}, year = {2001}, volume = {17}, number = {3}, pages = {399-408}, doi = {10.1007/s100530170014}, language = {English}, unique-id = {ISI:000173137500014}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2001 M Jaekel and S Reynaud "Quantum algebraic representation of localization and motion of a Dirac electron" , In Quantum electrodynamics and physics of the vacuum. 564 58-67. |
Abstract: Quantum algebraic observables representing localization in space-time of a Dirac electron are defined. Inertial motion of the electron is represented in the quantum algebra with electron mass acting as the generator of motion. Since transformations to uniformly accelerated frames are naturally included in this conformally invariant description, the quantum algebra is also able to deal with uniformly accelerated motion. |
BibTeX:
@inproceedings{Jaekel2001, author = {Jaekel, MT and Reynaud, S}, title = {Quantum algebraic representation of localization and motion of a Dirac electron}, booktitle = {Quantum electrodynamics and physics of the vacuum}, year = {2001}, volume = {564}, pages = {58-67}, language = {English}, unique-id = {ISI:000169066900008}, web-of-science-categories = {Physics, Applied; Physics, Particles & Fields; Physics, Mathematical} } |
2001 S Reynaud, A Lambrecht, C Genet and M Jaekel "Quantum vacuum fluctuations" , C. R. Acad. Sci. Ser. IV-Phys. Astrophys. 2 1287-1298. |
Abstract: The existence of irreducible field fluctuations in vacuum is an important prediction of quantum theory. These fluctuations have many observable consequences, like the Casimir effect, which is now measured with good accuracy and agreement with theory, provided that the latter accounts for differences between real experiments and the ideal situation considered by Casimir. But the vacuum energy density calculated by adding field mode energies is much larger than the density observed: around us through gravitational phenomena. This `vacuum catastrophe' is one of the unsolved problems at the interface between quantum theory on one hand, inertial and gravitational phenomena on the other hand. It is however possible to put properly formulated questions in the vicinity of this paradox. These questions are directly connected to observable effects bearing upon the principle of relativity of motion in quantum vacuum. (C) 2001 Academic des sciences/Editions scientifiques et medicales Elsevier SAS. |
BibTeX:
@article{Reynaud2001, author = {Reynaud, S and Lambrecht, A and Genet, C and Jaekel, MT}, title = {Quantum vacuum fluctuations}, journal = {COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE IV PHYSIQUE ASTROPHYSIQUE}, journal = {C. R. Acad. Sci. Ser. IV-Phys. Astrophys.}, year = {2001}, volume = {2}, number = {9}, pages = {1287-1298}, doi = {10.1016/S1296-2147(01)01270-7}, language = {English}, unique-id = {ISI:000172843600005}, web-of-science-categories = {Astronomy & Astrophysics; Physics, Multidisciplinary} } |
2001 S Reynaud, P Neto, A Lambrecht and M Jaekel "Gravitational decoherence of planetary motions" , Europhys. Lett. 54 135-140. |
Abstract: We study the effect of the scattering of gravitational waves on planetary motions, say the motion of the Moon around the Earth. Though this effect has a negligible influence on dissipation, it dominates fluctuations and the associated decoherence mechanism, due to the very high effective temperature of the background of gravitational waves in our galactic environment. |
BibTeX:
@article{Reynaud2001a, author = {Reynaud, S and Neto, PAM and Lambrecht, A and Jaekel, MT}, title = {Gravitational decoherence of planetary motions}, journal = {EUROPHYSICS LETTERS}, journal = {Europhys. Lett.}, year = {2001}, volume = {54}, number = {2}, pages = {135-140}, doi = {10.1209/epl/i2001-00286-8}, language = {English}, unique-id = {ISI:000167914900001}, web-of-science-categories = {Physics, Multidisciplinary} } |
2000 J Courty, F Grassia and S Reynaud "Thermal and quantum noise in active systems" , In Noise, oscillators and algebraic randomness: from noise in communication systems to number theory. 550 71-83. |
Abstract: We present a quantum network approach to the treatment of thermal and quantum fluctuations in measurement devices. The measurement is described as a scattering process of input fluctuations towards output ones. We present the results obtained with this method for the treatment of a cold damped capacitive accelerometer. |
BibTeX:
@inproceedings{Courty2000, author = {Courty, JM and Grassia, F and Reynaud, S}, title = {Thermal and quantum noise in active systems}, booktitle = {Noise, oscillators and algebraic randomness: from noise in communication systems to number theory}, year = {2000}, volume = {550}, pages = {71-83}, language = {English}, unique-id = {ISI:000170514500002}, web-of-science-categories = {Acoustics; Engineering, Electrical & Electronic; Mathematics, Applied; Physics, Applied} } |
2000 J Courty and S Reynaud "Quantum fluctuations for drag-free geodesic motion" , J. Opt. B-Quantum Semicl. Opt. 2 90-93. |
Abstract: The drag-free technique is used to force a proof mass to follow a geodesic motion. The mass is Protected from perturbations by a cage, and the motion of the latter is actively controlled to follow the motion of the proof mass. We present a theoretical analysis of the effects of quantum fluctuations for this technique. We show that a perfect drag-free operation is in principle possible at the quantum level, in spite of the back-action exerted on the mass by the position sensor. |
BibTeX:
@article{Courty2000a, author = {Courty, JM and Reynaud, S}, title = {Quantum fluctuations for drag-free geodesic motion}, journal = {JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS}, journal = {J. Opt. B-Quantum Semicl. Opt.}, year = {2000}, volume = {2}, number = {2}, pages = {90-93}, doi = {10.1088/1464-4266/2/2/304}, language = {English}, unique-id = {ISI:000089908800006}, web-of-science-categories = {Optics; Physics, Applied} } |
2000 C Genet, A Lambrecht and S Reynaud "Temperature dependence of the Casimir effect between metallic mirrors" , Phys. Rev. A 62 012110 |
Abstract: We calculate the Casimir force and free energy for plane metallic mirrors at nonzero temperature. Numerical evaluations an given with temperature and conductivity effects treated simultaneously. The results are compared with the approximation where both effects an treated independently and the corrections simply multiplied. The deviation between the exact and approximated results takes the form of a temperature dependent function for which an analytical expression is given. The knowledge of this function allows simple estimations that are accurate below the 1% level. |
BibTeX:
@article{Genet2000, author = {Genet, C and Lambrecht, A and Reynaud, S}, title = {Temperature dependence of the Casimir effect between metallic mirrors}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {2000}, volume = {62}, number = {1}, article-number = {012110}, doi = {10.1103/PhysRevA.62.012110}, language = {English}, unique-id = {ISI:000088139800023}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2000 F Grassia, J Courty, S Reynaud and P Touboul "Quantum theory of fluctuations in a cold damped accelerometer" , Eur. Phys. J. D 8 101-110. |
Abstract: We present a quantum network approach to real high sensitivity measurements. Thermal and quantum fluctuations due to active as well as passive elements are taken into account. The method is applied to the analysis of the capacitive accelerometer using the cold damping technique, developed for fundamental physics in space by ONERA and the ultimate limits of this instrument are discussed. It is confirmed in this quantum analysis that the cold damping technique allows one to control efficiently the test mass motion without degrading the noise level. |
BibTeX:
@article{Grassia2000, author = {Grassia, F and Courty, JM and Reynaud, S and Touboul, P}, title = {Quantum theory of fluctuations in a cold damped accelerometer}, journal = {EUROPEAN PHYSICAL JOURNAL D}, journal = {Eur. Phys. J. D}, year = {2000}, volume = {8}, number = {1}, pages = {101-110}, language = {English}, unique-id = {ISI:000084829900013}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2000 M Jaekel and S Reynaud "Quantum hexaspherical observables for electrons" , Ann. Physik 9 589-604. |
Abstract: A new quantum algebraic description of relativistic electrons, built on a conformal dynamical symmetry (SO(4,2)), has recently been proposed to treat localization in space-time. It is shown here that localization of an electron may be represented by components of a SO(4, 2) vector which are quantum generalizations of the hexaspherical coordinates of classical projective geometry. The shift of this vector under transformations to uniformly accelerated frames is described by SO(4,2) rotations. Hexaspherical observables also allow one to represent the quantum law of free fall under a form explicitly compatible with the same dynamical symmetry. |
BibTeX:
@article{Jaekel2000, author = {Jaekel, MT and Reynaud, S}, title = {Quantum hexaspherical observables for electrons}, journal = {ANNALEN DER PHYSIK}, journal = {Ann. Physik}, year = {2000}, volume = {9}, number = {8}, pages = {589-604}, doi = {10.1002/1521-3889(200009)9:8<589::AID-ANDP589>3.0.CO;2}, language = {English}, unique-id = {ISI:000089601400002}, web-of-science-categories = {Physics, Multidisciplinary} } |
2000 A Lambrecht and S Reynaud "Casimir force between metallic mirrors" , Eur. Phys. J. D 8 309-318. |
Abstract: Mit study the influence of finite conductivity of metals on the Casimir effect. We put the emphasis on explicit theoretical evaluations which can help comparing experimental results with theory. The reduction of the Casimir force is evaluated for plane metallic plates. The reduction of the Casimir energy in the same configuration is also calculated. It can be used to infer the reduction of the force in the plane-sphere geometry through the ``proximity theorem''. Frequency dependent dielectric response functions of the metals are represented either by the simple plasma model or more accurately, by using the optical data known for the metals used in recent experiments, that is Al, Au and Cu. In the two latter cases, the results obtained here differ significantly from those published recently. |
BibTeX:
@article{Lambrecht2000, author = {Lambrecht, A and Reynaud, S}, title = {Casimir force between metallic mirrors}, journal = {EUROPEAN PHYSICAL JOURNAL D}, journal = {Eur. Phys. J. D}, year = {2000}, volume = {8}, number = {3}, pages = {309-318}, doi = {10.1007/s100530050041}, language = {English}, unique-id = {ISI:000086984000002}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
2000 A Lambrecht and S Reynaud "Comment on ``Demonstration of the Casimir force in the 0.6 to 6 mu m range''" , Phys. Rev. Lett. 84 5672. |
BibTeX:
@article{Lambrecht2000a, author = {Lambrecht, A and Reynaud, S}, title = {Comment on ``Demonstration of the Casimir force in the 0.6 to 6 mu m range''}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {2000}, volume = {84}, number = {24}, pages = {5672}, doi = {10.1103/PhysRevLett.84.5672}, language = {English}, unique-id = {ISI:000087522200054}, web-of-science-categories = {Physics, Multidisciplinary} } |
1999 J Courty, F Grassia and S Reynaud "Quantum noise in ideal operational amplifiers" , Europhys. Lett. 46 31-37. |
Abstract: We consider a model of quantum measurement built on an ideal operational amplifier operating in the limit of infinite gain, infinite input impedance and null output impedance and with a feedback loop. We evaluate the intensity and voltage noises which have to be added to the classical amplification equations in order to fulfill the requirements of quantum mechanics. We give a description of this measurement device as a quantum network scattering quantum fluctuations from input to output ports. |
BibTeX:
@article{Courty1999, author = {Courty, JM and Grassia, F and Reynaud, S}, title = {Quantum noise in ideal operational amplifiers}, journal = {EUROPHYSICS LETTERS}, journal = {Europhys. Lett.}, year = {1999}, volume = {46}, number = {1}, pages = {31-37}, doi = {10.1209/epl/i1999-00558-3}, language = {English}, unique-id = {ISI:000079570800006}, web-of-science-categories = {Physics, Multidisciplinary} } |
1999 H Eleuch, J Courty, G Messin, C Fabre and E Giacobino "Cavity QED effects in semiconductor microcavities" , J. Opt. B-Quantum Semicl. Opt. 1 1-7. |
Abstract: A theoretical investigation of cavity QED effects in semiconductor microcavities containing quantum wells is presented. A model Hamiltonian is used to derive equations of motion for the quantum photon and exciton fields in the cavity. Quantum effects such as squeezing and antibunching are predicted in the light field going out of the cavity under irradiation by a coherent laser field, if exciton-phonon scattering is weak enough. Exciton-phonon scattering is shown to destroy the nonclassical effects and to yield excess noise in the output field. |
BibTeX:
@article{Eleuch1999, author = {Eleuch, H and Courty, JM and Messin, G and Fabre, C and Giacobino, E}, title = {Cavity QED effects in semiconductor microcavities}, journal = {JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS}, journal = {J. Opt. B-Quantum Semicl. Opt.}, year = {1999}, volume = {1}, number = {1}, pages = {1-7}, doi = {10.1088/1464-4266/1/1/001}, language = {English}, unique-id = {ISI:000081422100002}, web-of-science-categories = {Optics; Physics, Applied} } |
1999 M Jaekel and S Reynaud "Observable Dirac electron in accelerated frames" , Phys. Lett. A 256 95-103. |
Abstract: We present a new quantum algebraic description of an electron localized in space-time. Positions in space and time, mass and Clifford generators are defined as quantum operators. Commutation relations and relativistic shifts under frame transformations are determined within a unique algebraic framework. Redshifts, i.e. shifts under transformations to uniformly accelerated frames, are evaluated and found to differ from the expressions of classical relativity. (C) 1999 Published by Elsevier Science B.V. All rights reserved. |
BibTeX:
@article{Jaekel1999, author = {Jaekel, MT and Reynaud, S}, title = {Observable Dirac electron in accelerated frames}, journal = {PHYSICS LETTERS A}, journal = {Phys. Lett. A}, year = {1999}, volume = {256}, number = {2-3}, pages = {95-103}, doi = {10.1016/S0375-9601(99)00228-5}, language = {English}, unique-id = {ISI:000080767300002}, web-of-science-categories = {Physics, Multidisciplinary} } |
1999 M Jaekel and S Reynaud "Quantum localization observables and accelerated frames" , Eur. Phys. J. D 5 9-21. |
Abstract: We define quantum observables associated With Einstein localization in space-time. These observables are built on Poincare and dilatation generators. Their commutators are given by spin observables defined from the same symmetry generators. Their shifts under transformations to uniformly accelerated frames are evaluated through algebraic computations in conformal algebra. Spin number is found to vary under such transformations with a variation involving further observables introduced as irreducible quadrupole momenta. Quadrupole observables may be dealt with as non commutative polarizations which allow one to define step operators increasing or decreasing the spin number by unity. |
BibTeX:
@article{Jaekel1999a, author = {Jaekel, MT and Reynaud, S}, title = {Quantum localization observables and accelerated frames}, journal = {EUROPEAN PHYSICAL JOURNAL D}, journal = {Eur. Phys. J. D}, year = {1999}, volume = {5}, number = {1}, pages = {9-21}, doi = {10.1007/s100530050223}, language = {English}, unique-id = {ISI:000078277500004}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1999 G Messin, J Karr, H Eleuch, J Courty and E Giacobino "Squeezed states and the quantum noise of light in semiconductor microcavities" , J. Phys. Cond. Matter 11 6069-6078. |
Abstract: A theoretical investigation of the quantum noise in the light reflected by a microcavity containing ii semiconductor quantum well is presented. Squeezing is predicted when scattering processes have a low efficiency. Exciton-phonon scattering is shown to destroy the non-classical effects and to yield excess noise in the output field. |
BibTeX:
@article{Messin1999, author = {Messin, G and Karr, JP and Eleuch, H and Courty, JM and Giacobino, E}, title = {Squeezed states and the quantum noise of light in semiconductor microcavities}, journal = {JOURNAL OF PHYSICS-CONDENSED MATTER}, journal = {J. Phys. Cond. Matter}, year = {1999}, volume = {11}, number = {31}, pages = {6069-6078}, doi = {10.1088/0953-8984/11/31/314}, language = {English}, unique-id = {ISI:000082112500014}, web-of-science-categories = {Physics, Condensed Matter} } |
1998 J Courty, S Spalter, F Konig, A Sizmann and G Leuchs "Noise-free quantum-nondemolition measurement using optical solitons" , Phys. Rev. A 58 1501-1508. |
Abstract: The collision of solitons in optical fibers is a promising scheme for the quantum-nondemolition measurement of the photon number using the cross Kerr effect. In a realistic experimental situation, the sensitivity of the measurement is limited not only by self-phase-modulation noise of the probe but also by the phase noise added due to the vibrational excitations of the fiber. Former schemes proposed to overcome either of these problems are not compatible with each other. In this paper the sensitivity of different type of detection is carefully studied. We propose a solution based on the use of a phase-shifting cavity. We show that this provides a conceptually and practically simple solution eliminating simultaneously both sources of excess noise. [S1050-2947(98)04406-0]. |
BibTeX:
@article{Courty1998, author = {Courty, JM and Spalter, S and Konig, F and Sizmann, A and Leuchs, G}, title = {Noise-free quantum-nondemolition measurement using optical solitons}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {1998}, volume = {58}, number = {2}, pages = {1501-1508}, doi = {10.1103/PhysRevA.58.1501}, language = {English}, unique-id = {ISI:000075386200085}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1998 H Eleuch, G Messin, C Begon, J Courty, C Fabre and E Giacobino
"Effects of quantum electrodynamics in semiconductor microcavities" , Ann. Physique
23
213-214.
[BibTeX] |
BibTeX:
@article{Eleuch1998, author = {Eleuch, H and Messin, G and Begon, C and Courty, JM and Fabre, C and Giacobino, E}, title = {Effects of quantum electrodynamics in semiconductor microcavities}, journal = {ANNALES DE PHYSIQUE}, journal = {Ann. Physique}, year = {1998}, volume = {23}, number = {C1}, pages = {213-214}, language = {French}, unique-id = {ISI:000077033000050}, web-of-science-categories = {Physics, Multidisciplinary} } |
1998 M Jaekel and S Reynaud "Conformal symmetry and quantum relativity" , Found. Phys. 28 439-456. |
Abstract: The relativistic conception of space and time is challenged by the quantum nature of physical observables. Ir has been known for a long time that Poincare symmetry of field theory can be extended to the larger conformal symmetry. We use these symmetries to define quantum observables associated with positions in space-time, in the spirit of Einstein theory of relativity. This conception of localization may be applied to massive as well as massless fields. Localization observables are defined as to obey Lorentz covariant commutation relations and in particular include a time observable conjugated to energy. While position components do not commute in the presence of a nonvanishing spin, they still satisfy quantum relations which generalize the differential laws of classical relativity. We also give of these observables a representation in terms of canonical spatial positions, canonical spin components, and a propel time operator conjugated to mass. These results plead for a new representation not only of space-time localization but also of motion. |
BibTeX:
@article{Jaekel1998, author = {Jaekel, MT and Reynaud, S}, title = {Conformal symmetry and quantum relativity}, journal = {FOUNDATIONS OF PHYSICS}, journal = {Found. Phys.}, year = {1998}, volume = {28}, number = {3}, pages = {439-456}, doi = {10.1023/A:1018716111971}, language = {English}, unique-id = {ISI:000074465900009}, web-of-science-categories = {Physics, Multidisciplinary} } |
1998 A Lambrecht, M Jaekel and S Reynaud "Frequency up-converted radiation from a cavity moving in vacuum" , Eur. Phys. J. D 3 95-104. |
Abstract: We calculate the photon emission of a high finesse cavity moving in vacuum. The cavity is treated as an open system. The field initially in the vacuum state accumulates a dephasing depending on the mirrors motion when bouncing back and forth inside the cavity. The dephasing is not linearized in our calculation, so that qualitatively new effects like pulse shaping in the time domain and frequency up-conversion in the spectrum are found. Furthermore we predict the existence of a threshold above which the system should show self-sustained oscillations. |
BibTeX:
@article{Lambrecht1998, author = {Lambrecht, A and Jaekel, MT and Reynaud, S}, title = {Frequency up-converted radiation from a cavity moving in vacuum}, journal = {EUROPEAN PHYSICAL JOURNAL D}, journal = {Eur. Phys. J. D}, year = {1998}, volume = {3}, number = {1}, pages = {95-104}, doi = {10.1007/s100530050152}, language = {English}, unique-id = {ISI:000075708300011}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1998 A Lambrecht, M Jaekel and S Reynaud "Generating photon pulses with an oscillating cavity" , Europhys. Lett. 43 147-152. |
Abstract: We study the generation of photon pulses from thermal field fluctuations through opto-mechanical coupling to a cavity with an oscillatory motion. Pulses are regularly spaced and become sharp for a high-finesse cavity. |
BibTeX:
@article{Lambrecht1998a, author = {Lambrecht, A and Jaekel, MT and Reynaud, S}, title = {Generating photon pulses with an oscillating cavity}, journal = {EUROPHYSICS LETTERS}, journal = {Europhys. Lett.}, year = {1998}, volume = {43}, number = {2}, pages = {147-152}, doi = {10.1209/epl/i1998-00333-0}, language = {English}, unique-id = {ISI:000074926100007}, web-of-science-categories = {Physics, Multidisciplinary} } |
1997 M Jaekel and S Reynaud "Movement and fluctuations of the vacuum" , Rep. Prog. Phys. 60 863-887. |
Abstract: Quantum fields possess zero-point or vacuum fluctuations which induce mechanical effects, namely generalized Casimir forces, on any scatterer. Symmetries of vacuum therefore raise fundamental questions when confronted with the principle of relativity of motion in vacuum. The specific case of uniformly accelerated motion is particularly interesting, in connection with the much debated question of the appearance of vacuum in accelerated frames. The choice of Rindler representation, commonly used in general relativity, transforms vacuum fluctuations into thermal fluctuations, raising difficulties of interpretation. In contrast, the conformal representation of uniformly accelerated frames fits the symmetry properties of field propagation and quantum vacuum and thus leads us to extend the principle of relativity of motion to uniform accelerations. Mirrors moving in vacuum with a non-uniform acceleration are known to radiate. The associated radiation reaction force is directly connected to fluctuating forces felt by motionless mirrors through fluctuation-dissipation relations. Scatterers in vacuum undergo a quantum Brownian motion which describes irreducible quantum fluctuations. Vacuum fluctuations impose ultimate limitations on measurements of position in space-time, and thus challenge the very concept of space-time localization within a quantum framework. For test masses greater than Planck mass, the ultimate limit in localization is determined by gravitational vacuum fluctuations. Not only positions in space-time, but also geodesic distances, behave as quantum variables, reflecting the necessary quantum nature of an underlying geometry. |
BibTeX:
@article{Jaekel1997, author = {Jaekel, MT and Reynaud, S}, title = {Movement and fluctuations of the vacuum}, journal = {REPORTS ON PROGRESS IN PHYSICS}, journal = {Rep. Prog. Phys.}, year = {1997}, volume = {60}, number = {9}, pages = {863-887}, doi = {10.1088/0034-4885/60/9/001}, language = {English}, unique-id = {ISI:A1997XW81300001}, web-of-science-categories = {Physics, Multidisciplinary} } |
1997 M Jaekel and S Reynaud "Mass as a relativistic quantum observable" , Europhys. Lett. 38 1-6. |
Abstract: A field state containing photons propagating in different directions has a non-vanishing mass which is a quantum observable. We interpret the shift of this mass under transformations to accelerated frames as defining space-time observables canonically conjugated to energy-momentum observables. Shifts of quantum observables differ from the predictions of classical relativity theory in the presence of a non-vanishing spin. In particular, quantum redshift of energy-momentum is affected by spin. Shifts of position and energy-momentum observables hen-ever obey simple universal rules derived from invariance of canonical commutators. |
BibTeX:
@article{Jaekel1997a, author = {Jaekel, MT and Reynaud, S}, title = {Mass as a relativistic quantum observable}, journal = {EUROPHYSICS LETTERS}, journal = {Europhys. Lett.}, year = {1997}, volume = {38}, number = {1}, pages = {1-6}, doi = {10.1209/epl/i1997-00108-7}, language = {English}, unique-id = {ISI:A1997WU32500001}, web-of-science-categories = {Physics, Multidisciplinary} } |
1997 A Lambrecht
"Shaking up a vacuum to create light" , Recherche
40-42.
[BibTeX] |
BibTeX:
@article{Lambrecht1997, author = {Lambrecht, A}, title = {Shaking up a vacuum to create light}, journal = {RECHERCHE}, journal = {Recherche}, year = {1997}, number = {295}, pages = {40-42}, language = {French}, unique-id = {ISI:A1997WF53500023}, web-of-science-categories = {Multidisciplinary Sciences} } |
1997 A Lambrecht, M Jaekel and S Reynaud "The Casimir force for passive mirrors" , Phys. Lett. A 225 188-194. |
Abstract: We show that the Casimir force between miners with arbitrary frequency dependent reflectivities obeys bounds due to causality and passivity properties. The force is always smaller than the Casimir farce between two perfectly reflecting mirrors. For narrow-band mirrors in particular, the force is found to decrease with the mirrors' bandwidth. |
BibTeX:
@article{Lambrecht1997a, author = {Lambrecht, A and Jaekel, MT and Reynaud, S}, title = {The Casimir force for passive mirrors}, journal = {PHYSICS LETTERS A}, journal = {Phys. Lett. A}, year = {1997}, volume = {225}, number = {4-6}, pages = {188-194}, doi = {10.1016/S0375-9601(96)00885-7}, language = {English}, unique-id = {ISI:A1997WE53600002}, web-of-science-categories = {Physics, Multidisciplinary} } |
1997 A Lambrecht, M Jaekel and S Reynaud "Sonoluminescence as quantum vacuum radiation - Comment" , Phys. Rev. Lett. 78 2267. |
BibTeX:
@article{Lambrecht1997b, author = {Lambrecht, A and Jaekel, MT and Reynaud, S}, title = {Sonoluminescence as quantum vacuum radiation - Comment}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {1997}, volume = {78}, number = {11}, pages = {2267}, doi = {10.1103/PhysRevLett.78.2267}, language = {English}, unique-id = {ISI:A1997WN07900062}, web-of-science-categories = {Physics, Multidisciplinary} } |
1996 J Courtois, J Courty and J Mertz "Internal dynamics of multilevel atoms near a vacuum-dielectric interface" , Phys. Rev. A 53 1862-1878. |
Abstract: We show how the internal dynamics of a multilevel atom are modified in the vicinity of the interface between a vacuum and a simple or multilayered lossless dielectric medium. Optical Bloch equations are derived, which take into account the modifications of spontaneous emission rates and energy levels experienced by the atom. van der Waals level shifts are evaluated using the method of images for dielectrics. Spontaneous emission rates and radiation patterns are calculated in a simple way using the Lorentz reciprocity theorem. |
BibTeX:
@article{Courtois1996, author = {Courtois, JY and Courty, JM and Mertz, JC}, title = {Internal dynamics of multilevel atoms near a vacuum-dielectric interface}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {1996}, volume = {53}, number = {3}, pages = {1862-1878}, doi = {10.1103/PhysRevA.53.1862}, language = {English}, unique-id = {ISI:A1996TY08700079}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1996 J Courty and A Lambrecht "Transverse-mode coupling in a Kerr medium" , Phys. Rev. A 54 5243-5252. |
Abstract: We analyze nonlinear transverse mode coupling in a Kerr medium placed in an optical cavity and its influence on bistability and different kinds of quantum noise reduction. Even for an input beam that is perfectly matched to a cavity mode, the nonlinear coupling produces an excess noise in the fluctuations of the output beam. Intensity squeezing seems to be particularly robust with respect to mode coupling, while quadrature squeezing is more sensitive. However, it is possible to find a mode whose quadrature squeezing is not affected by the coupling. |
BibTeX:
@article{Courty1996, author = {Courty, JM and Lambrecht, A}, title = {Transverse-mode coupling in a Kerr medium}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {1996}, volume = {54}, number = {6}, pages = {5243-5252}, doi = {10.1103/PhysRevA.54.5243}, language = {English}, unique-id = {ISI:A1996VX71400079}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1996 M Jaekel and S Reynaud "Space-time localisation with quantum fields" , Phys. Lett. A 220 10-16. |
Abstract: We introduce observables associated with the space-time position of a quantum point defined by the intersection of two light pulses. The time observable is canonically conjugated to the energy. Conformal symmetry of massless quantum fields is used first to build the definition of these observables and then to describe their relativistic properties under frame transformations. The transformations to accelerated frames of the space-time observables depart from the laws of classical relativity. The Einstein laws for the shifts of clock rates and frequencies are recovered in the quantum description, and their formulation provides a conformal metric factor behaving as a quantum observable. |
BibTeX:
@article{Jaekel1996, author = {Jaekel, MT and Reynaud, S}, title = {Space-time localisation with quantum fields}, journal = {PHYSICS LETTERS A}, journal = {Phys. Lett. A}, year = {1996}, volume = {220}, number = {1-3}, pages = {10-16}, doi = {10.1016/0375-9601(96)00496-3}, language = {English}, unique-id = {ISI:A1996VE42400002}, web-of-science-categories = {Physics, Multidisciplinary} } |
1996 M Jaekel and S Reynaud "Time-frequency transfer with quantum fields" , Phys. Rev. Lett. 76 2407-2411. |
Abstract: Clock synchronization relies on time-frequency transfer procedures which involve quantum fields. We use the conformal symmetry of such fields to define as quantum operators the time and frequency exchanged in transfer procedures and to describe their transformation under transformations to inertial or accelerated frames. We show that the classical laws of relativity are changed when brought into the framework of quantum theory. |
BibTeX:
@article{Jaekel1996a, author = {Jaekel, MT and Reynaud, S}, title = {Time-frequency transfer with quantum fields}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {1996}, volume = {76}, number = {14}, pages = {2407-2411}, doi = {10.1103/PhysRevLett.76.2407}, language = {English}, unique-id = {ISI:A1996UC77700001}, web-of-science-categories = {Physics, Multidisciplinary} } |
1996 A Lambrecht, T Coudreau, A Steinberg and E Giacobino "Squeezing with cold atoms" , Europhys. Lett. 36 93-98. |
Abstract: Cold atoms from a magneto-optic trap have been used as a nonlinear (chi((3))) medium in a nearly resonant cavity. Squeezing in a probe beam passing through the cavity was demonstrated. The measured noise reduction is 40% for free atoms and 20% for weakly trapped atoms. |
BibTeX:
@article{Lambrecht1996, author = {Lambrecht, A and Coudreau, T and Steinberg, AM and Giacobino, E}, title = {Squeezing with cold atoms}, journal = {EUROPHYSICS LETTERS}, journal = {Europhys. Lett.}, year = {1996}, volume = {36}, number = {2}, pages = {93-98}, doi = {10.1209/epl/i1996-00192-1}, language = {English}, unique-id = {ISI:A1996VP87100003}, web-of-science-categories = {Physics, Multidisciplinary} } |
1996 A Lambrecht, J Courty and S Reynaud "Transverse effects on squeezing with atoms" , J. Physique II 6 1133-1151. |
Abstract: We evaluate the squeezing of a probe beam with a transverse Gaussian structure interacting with an ensemble of two-level atoms in a cavity. We use the linear input-output formalism where the effect of atoms is described by susceptibility and noise functions, and show that the transverse structure is accounted for by averaging these atomic functions over the intensity profile. The results of the plane-wave and Gaussian-wave theories are compared. We find that, when a large squeezing is predicted, the prediction of the plane-wave model is not reliable outside the Kerr domain. We give an estimate of the squeezing degradation due to the Gaussian transverse structure. |
BibTeX:
@article{Lambrecht1996a, author = {Lambrecht, A and Courty, JM and Reynaud, S}, title = {Transverse effects on squeezing with atoms}, journal = {JOURNAL DE PHYSIQUE II}, journal = {J. Physique II}, year = {1996}, volume = {6}, number = {8}, pages = {1133-1151}, language = {English}, unique-id = {ISI:A1996UZ08900002}, web-of-science-categories = {Mechanics; Physics, Atomic, Molecular & Chemical} } |
1996 A Lambrecht, E Giacobino and S Reynaud "Atomic number fluctuations in a falling cold atom cloud" , Quantum Semiclass. Opt. 8 457-472. |
Abstract: We evaluate the effective number of atoms in experiments where a probe laser beam with a Gaussian transverse profile passes through an atomic medium consisting of a cold atom cloud released from a magneto-optical trap. Considering the case where the initial distribution is a Gaussian function of position and of velocity, we give a quantitative description of the time variation of the effective number while the cloud is exploding and falling. We discuss the two cases where the effective number is defined from the linear and nonlinear phase shifts, respectively. We also evaluate the fluctuations of the effective atomic number by calculating their correlation functions and the associated noise spectra. Finally, we estimate the effect of these fluctuations on experiments where the probe beam passes through a cavity containing the atomic cloud. |
BibTeX:
@article{Lambrecht1996b, author = {Lambrecht, A and Giacobino, E and Reynaud, S}, title = {Atomic number fluctuations in a falling cold atom cloud}, journal = {QUANTUM AND SEMICLASSICAL OPTICS}, journal = {Quantum Semiclass. Opt.}, year = {1996}, volume = {8}, number = {3}, pages = {457-472}, doi = {10.1088/1355-5111/8/3/009}, language = {English}, unique-id = {ISI:A1996UR38800009}, web-of-science-categories = {Optics; Physics, Applied} } |
1996 A Lambrecht, M Jaekel and S Reynaud "Motion induced radiation from a vibrating cavity" , Phys. Rev. Lett. 77 615-618. |
Abstract: We study the radiation emitted by a cavity moving in vacuum. We give a quantitative estimate of the photon production inside the cavity as well as of the photon flux radiated from the cavity. A resonance enhancement occurs not only when the cavity length is modulated but also for a global oscillation of the cavity. For a high finesse cavity the emitted radiation surpasses radiation from a single mirror by orders of magnitude. |
BibTeX:
@article{Lambrecht1996c, author = {Lambrecht, A and Jaekel, MT and Reynaud, S}, title = {Motion induced radiation from a vibrating cavity}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {1996}, volume = {77}, number = {4}, pages = {615-618}, doi = {10.1103/PhysRevLett.77.615}, language = {English}, unique-id = {ISI:A1996UY98400008}, web-of-science-categories = {Physics, Multidisciplinary} } |
1995 J Courtois, J Courty and S Reynaud "Quantum-nondemolition measurements using a crossed Kerr-effect between atomic and light fields" , Phys. Rev. A 52 1507-1517. |
Abstract: We analyze the coupling between the fluctuations of an atomic beam incident on an evanescent wave mirror and the fluctuations of the laser beam producing the evanescent potential barrier. We show that this coupling is equivalent to a crossed Kerr effect between an atomic field and a light field, and that the consistency of the theory requires that both fields be subject to symmetrical commutation relations and quantum fluctuations. We show in particular that the phase shift undergone by the light field during the atomic reflection process permits a quantum nondemolition measurement of the incident atomic intensity. |
BibTeX:
@article{Courtois1995, author = {Courtois, JY and Courty, JM and Reynaud, S}, title = {Quantum-nondemolition measurements using a crossed Kerr-effect between atomic and light fields}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {1995}, volume = {52}, number = {2}, pages = {1507-1517}, doi = {10.1103/PhysRevA.52.1507}, language = {English}, unique-id = {ISI:A1995RN56100072}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1995 M Jaekel and S Reynaud "Quantum fluctuations of vacuum stress tensors and spacetime curvatures" , Ann. Physik 4 68-86. |
Abstract: We analyze the quantum fluctuations of vacuum stress tensors and spacetime curvatures, using the framework of linear response theory which connects these fluctuations to dissipation mechanisms arising when stress tensors and spacetime metric are coupled. Vacuum fluctuations of spacetime curvatures are shown to be a sum of two contributions at lowest orders; the first one corresponds to vacuum gravitational waves and is restricted to light-like wavevectors and vanishing Einstein curvature, while the second one arises from gravity of vacuum stress tensors. From these fluctuations, we deduce noise spectra for geodesic deviations registered by probe fields which determine ultimate limits in length or time measurements. In particular, a relation between noise spectra characterizing spacetime fluctuations and the number of massless neutrino fields is obtained. |
BibTeX:
@article{Jaekel1995, author = {Jaekel, MT and Reynaud, S}, title = {Quantum fluctuations of vacuum stress tensors and spacetime curvatures}, journal = {ANNALEN DER PHYSIK}, journal = {Ann. Physik}, year = {1995}, volume = {4}, number = {1}, pages = {68-86}, language = {English}, unique-id = {ISI:A1995QF02900007}, web-of-science-categories = {Physics, Multidisciplinary} } |
1995 M Jaekel and S Reynaud "Vacuum fluctuations, accelerated motion and conformal frames" , Quantum Semiclass. Opt. 7 499-508. |
Abstract: Radiation from a mirror moving in vacuum electromagnetic fields is shown to vanish in the case of a uniformly accelerated motion. Such motions are related to conformal coordinate transformations, which preserve correlation functions characteristic of vacuum fluctuations. As a result, vacuum fluctuations remain invariant under reflection upon a uniformly accelerated mirror, which therefore does not radiate and experiences no radiation reaction force. Mechanical effects of vacuum fluctuations thus exhibit an invariance with respect to uniformly accelerated motions. |
BibTeX:
@article{Jaekel1995a, author = {Jaekel, MT and Reynaud, S}, title = {Vacuum fluctuations, accelerated motion and conformal frames}, journal = {QUANTUM AND SEMICLASSICAL OPTICS}, journal = {Quantum Semiclass. Opt.}, year = {1995}, volume = {7}, number = {4}, pages = {499-508}, doi = {10.1088/1355-5111/7/4/007}, language = {English}, unique-id = {ISI:A1995RR35800007}, web-of-science-categories = {Optics; Physics, Applied} } |
1995 M Jaekel and S Reynaud "Quantum limits in spacetime measurements" , Quantum Semiclass. Opt. 7 639-647. |
Abstract: Quantum fluctuations impose fundamental limits on measurement and space-time probing. Although using optimized probe fields can allow sensitivity in a position measurement to be pushed beyond the `standard quantum limit', quantum fluctuations of the probe field still result in limitations which are determined by irreducible dissipation mechanisms. Fluctuation-dissipation relations in vacuum characterize the mechanical effects of radiation pressure vacuum fluctuations, which lead to an ultimate quantum noise for positions. For macroscopic reflectors, the quantum noise on positions is dominated by gravitational vacuum fluctuations, and takes a universal form deduced from quantum fluctuations of spacetime curvatures in vacuum. These can be considered as ultimate spacetime fluctuations, fixing ultimate quantum limits in spacetime measurements. |
BibTeX:
@article{Jaekel1995b, author = {Jaekel, MT and Reynaud, S}, title = {Quantum limits in spacetime measurements}, journal = {QUANTUM AND SEMICLASSICAL OPTICS}, journal = {Quantum Semiclass. Opt.}, year = {1995}, volume = {7}, number = {4}, pages = {639-647}, doi = {10.1088/1355-5111/7/4/018}, language = {English}, unique-id = {ISI:A1995RR35800021}, web-of-science-categories = {Optics; Physics, Applied} } |
1995 A Lambrecht, J Courty, S Reynaud and E Giacobino "Cold atoms - New medium for quantum optics" , Appl. Phys. B 60 129-134. |
Abstract: Laser-cooled and trapped cesium atoms have been used as a nonlinear medium in a nearly resonant cavity. A study of the semiclassical dynamics of the system was performed, showing bistability and instabilities. In the quantum domain, squeezing in a probe beam having interacted with this system was demonstrated. |
BibTeX:
@article{Lambrecht1995, author = {Lambrecht, A and Courty, JM and Reynaud, S and Giacobino, E}, title = {Cold atoms - New medium for quantum optics}, journal = {APPLIED PHYSICS B-LASERS AND OPTICS}, journal = {Appl. Phys. B}, year = {1995}, volume = {60}, number = {2-3}, pages = {129-134}, doi = {10.1007/BF01135854}, language = {English}, unique-id = {ISI:A1995QD23600011}, web-of-science-categories = {Optics; Physics, Applied} } |
1995 A Lambrecht, E Giacobino and J Courty "Optical nonlinear dynamics with cold atoms in a cavity" , Opt. Commun. 115 199-206. |
Abstract: This paper presents the nonlinear dynamics of laser cooled and trapped cesium atoms placed inside an optical cavity and interacting with a probe light beam slightly detuned from the 6S(1/2)F=4 to 6P(3/2)F=5 transition. The system exhibits very strong bistability and instabilities. The origin of the latter is found to be a competition between optical pumping and nonlinearities due to saturation of the optical transition. |
BibTeX:
@article{Lambrecht1995a, author = {Lambrecht, A and Giacobino, E and Courty, JM}, title = {Optical nonlinear dynamics with cold atoms in a cavity}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1995}, volume = {115}, number = {1-2}, pages = {199-206}, doi = {10.1016/0030-4018(94)00493-E}, language = {English}, unique-id = {ISI:A1995QK59800032}, web-of-science-categories = {Optics} } |
1994 C Fabre, M Pinard, S Bourzeix, A Heidmann, E Giacobino and S Reynaud "Quantum-noise reduction using a cavity with a movable mirror" , Phys. Rev. A 49 1337-1343. |
Abstract: Because of radiation pressure, optical cavity with harmonically bound mirrors has an intensity-dependent length and-behaves as an effective Kerr medium. We determine the quantum fluctuations of the;field reflected by such a cavity, taking into account the input field fluctuations and the mirror Brownian motion. In the regions of parameter space close to bistability turning points, we obtain a significant quantum noise reduction effect. |
BibTeX:
@article{Fabre1994, author = {Fabre, C and Pinard, M and Bourzeix, S and Heidmann, A and Giacobino, E and Reynaud, S}, title = {Quantum-noise reduction using a cavity with a movable mirror}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {1994}, volume = {49}, number = {2}, pages = {1337-1343}, doi = {10.1103/PhysRevA.49.1337}, language = {English}, unique-id = {ISI:A1994MW35200091}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1994 A Heidmann and S Reynaud "Photon noise-reduction by reflection from a movable mirror" , Phys. Rev. A 50 4237-4243. |
BibTeX:
@article{Heidmann1994, author = {Heidmann, A and Reynaud, S}, title = {Photon noise-reduction by reflection from a movable mirror}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {1994}, volume = {50}, number = {5}, pages = {4237-4243}, doi = {10.1103/PhysRevA.50.4237}, language = {English}, unique-id = {ISI:A1994PR43500084}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1994 M Jaekel and S Reynaud "Gravitational quantum limit for length measurements" , Phys. Lett. A 185 143-148. |
Abstract: We discuss a limit for sensitivity of length measurements which is due to the effect of vacuum fluctuations of the gravitational field. This limit is associated with irreducible quantum fluctuations of geodesic distances and it is characterized by a noise spectrum with an order of magnitude mainly determined by the Planck length. The gravitational vacuum fluctuations may (in an analysis restricted to questions of principle and when the measurement strategy is optimized) dominate fluctuations added by the measurement apparatus if macroscopic masses, i.e. masses larger than the Planck mass, are used. |
BibTeX:
@article{Jaekel1994, author = {Jaekel, MT and Reynaud, S}, title = {Gravitational quantum limit for length measurements}, journal = {PHYSICS LETTERS A}, journal = {Phys. Lett. A}, year = {1994}, volume = {185}, number = {2}, pages = {143-148}, doi = {10.1016/0375-9601(94)90838-9}, language = {English}, unique-id = {ISI:A1994MW83900005}, web-of-science-categories = {Physics, Multidisciplinary} } |
1993 F Haake, M Kolobov, C Fabre, E Giacobino and S Reynaud "Superradiant laser" , Phys. Rev. Lett. 71 995-998. |
Abstract: We discuss a novel laser scheme in which N three-level atoms maintain full cooperativity in a stationary regime. The intensity I of radiation is proportional to N2, the linewidth scales as 1/N2, and the output intensity fluctuations display up to 100% squeezing at low frequencies. The possibility of simultaneously slowing down phase diffusion and reducing intensity fluctuations makes this kind of laser an attractive goal to go for. |
BibTeX:
@article{Haake1993, author = {Haake, F and Kolobov, MI and Fabre, C and Giacobino, E and Reynaud, S}, title = {Superradiant laser}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {1993}, volume = {71}, number = {7}, pages = {995-998}, doi = {10.1103/PhysRevLett.71.995}, language = {English}, unique-id = {ISI:A1993LR90100012}, web-of-science-categories = {Physics, Multidisciplinary} } |
1993 M Jaekel and S Reynaud "Friction and inertia for a mirror in a thermal field" , Phys. Lett. A 172 319-324. |
Abstract: The force experienced by a mirror moving in a vacuum vanishes in the case of a uniform velocity or a uniform acceleration, as a consequence of the spatial symmetries of the vacuum. These symmetries do not subsist in a thermal field. We give a general expression of the corresponding viscosity coefficient (valid at any temperature and for any reflectivity function). We show that the computed motional force also contains a non-vanishing inertial term. The associated mass correction goes to zero in the limiting cases of perfect reflection or zero temperature. |
BibTeX:
@article{Jaekel1993, author = {Jaekel, MT and Reynaud, S}, title = {Friction and inertia for a mirror in a thermal field}, journal = {PHYSICS LETTERS A}, journal = {Phys. Lett. A}, year = {1993}, volume = {172}, number = {5}, pages = {319-324}, doi = {10.1016/0375-9601(93)90110-L}, language = {English}, unique-id = {ISI:A1993KH48900004}, web-of-science-categories = {Physics, Multidisciplinary} } |
1993 M Jaekel and S Reynaud "Quantum fluctuations of position of a mirror in vacuum" , J. Physique I 3 1-20. |
Abstract: A mirror scattering vacuum fields is submitted to a quantum fluctuating radiation pressure. It also experiences a motional force, related to force fluctuations through fluctuation-dissipation relations. The resulting position fluctuations of the coupled mirror are related to the dissipative part of the mechanical admittance. We compute the time dependent position commutator, which makes apparent the difference between the low-frequency and high-frequency masses, and the (anticommutator) noise spectrum, which describes the ultimate sensitivity in a length measurement using mirrors. |
BibTeX:
@article{Jaekel1993a, author = {Jaekel, MT and Reynaud, S}, title = {Quantum fluctuations of position of a mirror in vacuum}, journal = {JOURNAL DE PHYSIQUE I}, journal = {J. Physique I}, year = {1993}, volume = {3}, number = {1}, pages = {1-20}, language = {English}, unique-id = {ISI:A1993KJ78600001}, web-of-science-categories = {Physics, Multidisciplinary} } |
1993 M Jaekel and S Reynaud "Quantum Langevin equations and stability" , J. Physique I 3 339-352. |
Abstract: Different quantum Langevin equations obtained by coupling a particle to a field are examined. Instabilities or violations of causality affect the motion of a point charge linearly coupled to the electromagnetic field. In contrast, coupling a scatterer with a reflection cut-off to radiation pressure leads to stable and causal motions. The radiative reaction force exerted on a scatterer, and hence its quasistatic mass, depend on the field state. Explicit expressions for a particle scattering a thermal field in a two dimensional space-time are given. |
BibTeX:
@article{Jaekel1993b, author = {Jaekel, MT and Reynaud, S}, title = {Quantum Langevin equations and stability}, journal = {JOURNAL DE PHYSIQUE I}, journal = {J. Physique I}, year = {1993}, volume = {3}, number = {2}, pages = {339-352}, language = {English}, unique-id = {ISI:A1993KN16200010}, web-of-science-categories = {Physics, Multidisciplinary} } |
1993 M Jaekel and S Reynaud "Inertia of Casimir energy" , J. Physique I 3 1093-1104. |
Abstract: Moving mirrors are submitted to reaction forces by vacuum fields. The motional force is known to vanish for a single mirror uniformly accelerating in vacuum. We show that inertial forces (proportional to accelerations) arise in the presence of a second scatterer, exhibiting properties expected for a relative inertia : the mass corrections depend upon the distance between the mirrors, and each mirror experiences a force proportional to the acceleration of the other one. When both mirrors move with the same acceleration, the mass correction obtained for the cavity represents the contribution to inertia of Casimir energy. Accounting for the fact that the cavity moves as a stressed rigid body, it turns out that this contribution fits Einstein's law of inertia of energy. |
BibTeX:
@article{Jaekel1993c, author = {Jaekel, MT and Reynaud, S}, title = {Inertia of Casimir energy}, journal = {JOURNAL DE PHYSIQUE I}, journal = {J. Physique I}, year = {1993}, volume = {3}, number = {5}, pages = {1093-1104}, language = {English}, unique-id = {ISI:A1993LC96100002}, web-of-science-categories = {Physics, Multidisciplinary} } |
1993 M Jaekel and S Reynaud "Quantum fluctuations of mass for a mirror in vacuum" , Phys. Lett. A 180 9-14. |
Abstract: A mirror in vacuum is coupled to fluctuating quantum fields. As a result, its energy-momentum and mass fluctuate. We compute that correlation spectra of force and mass fluctuations for a mirror at rest in vacuum (of a scalar field in a two-dimensional space-time). The obtained expressions agree with a mass correction equal to a vacuum energy stored by the mirror. We introduce a Lagrangian model which consistently describes a scalar field coupled to a scatterer, with inertial mass being a quantum variable. |
BibTeX:
@article{Jaekel1993d, author = {Jaekel, MT and Reynaud, S}, title = {Quantum fluctuations of mass for a mirror in vacuum}, journal = {PHYSICS LETTERS A}, journal = {Phys. Lett. A}, year = {1993}, volume = {180}, number = {1-2}, pages = {9-14}, doi = {10.1016/0375-9601(93)90486-J}, language = {English}, unique-id = {ISI:A1993LV97300003}, web-of-science-categories = {Physics, Multidisciplinary} } |
1993 I Kudryavtsev, A Lambrecht, H Moyacessa and P Knight "Cooperativity and entanglement of atom-field states" , J. Mod. Opt. 40 1605-1630. |
Abstract: The Jaynes-Cummings model of a single two-level atom interacting with a quantized single-mode coherent field generates at the half-revival time a dynamically disentangled atom-field state. At such times, the field is in asymptotically pure Schrodinger cat state, a macroscopic superposition of distinct field eigenmodes. In this paper we address the problem of field purity when a second atom is allowed to interact with the cavity mode and becomes entangled with the first atom via their mutual cavity field with which they interact. We employ the collective Dicke states to describe the cooperative effects on the entanglement and show that the second atom spoils the purity of the field state except for special cases of the atom-field coupling or of initial conditions. |
BibTeX:
@article{Kudryavtsev1993, author = {Kudryavtsev, IK and Lambrecht, A and Moyacessa, H and Knight, PL}, title = {Cooperativity and entanglement of atom-field states}, journal = {JOURNAL OF MODERN OPTICS}, journal = {J. Mod. Opt.}, year = {1993}, volume = {40}, number = {8}, pages = {1605-1630}, doi = {10.1080/09500349314551631}, language = {English}, unique-id = {ISI:A1993LT05600016}, web-of-science-categories = {Optics} } |
1993 P Maia Neto and S Reynaud "Dissipative force on a sphere moving in vacuum" , Phys. Rev. A 47 1639-1646. |
Abstract: We derive the spectrum of fluctuations of the vacuum radiation pressure on a spherical perfectly reflecting mirror. From the fluctuation-dissipation theorem, we obtain the dissipative force exerted upon the mirror when it moves in vacuum. As,in the classical problem of scattering by a plane wave, the spectrum presents a resonant behavior at wavelengths of the order of the sphere's radius. The high-frequency limit agrees with Barton's general result for a large body of arbitrary shape. |
BibTeX:
@article{MaiaNeto1993, author = {Maia Neto, PA and Reynaud, S}, title = {Dissipative force on a sphere moving in vacuum}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {1993}, volume = {47}, number = {3}, pages = {1639-1646}, language = {English}, unique-id = {ISI:A1993KV98000012}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1992 F Bardou, O Emile, J Courty, C Westbrook and A Aspect "Magnetooptical trapping of metastable helium - collisions in the presence of resonant light" , Europhys. Lett. 20 681-686. |
Abstract: About 10(4) triplet metastable helium atoms have been trapped in a magneto-optical trap, based on the 23S1-23P2 transition at 1.083 mum (volume 0.1 mm3, temperature 1 mK). The losses of the trap are analysed by monitoring the ion current due to Penning collisions either with background gases, or between trapped atoms. The rate coefficient for these collisions between trapped metastable helium atoms has been found to be unusually large, and the crucial role of the quasi-resonant laser light has been experimentally demonstrated. The rate coefficient of the dominant process (He* (2(3)S1) + He* (2(3)P2) Penning collisions) has been measured by two different methods, and found to be K(sp) congruent-to 10(-7) cm3s-1 within an estimated factor of 4. The corresponding cross-section is 6.10(6) angstrom2. |
BibTeX:
@article{Bardou1992, author = {Bardou, F and Emile, O and Courty, JM and Westbrook, C and Aspect, A}, title = {Magnetooptical trapping of metastable helium - collisions in the presence of resonant light}, journal = {EUROPHYSICS LETTERS}, journal = {Europhys. Lett.}, year = {1992}, volume = {20}, number = {8}, pages = {681-686}, doi = {10.1209/0295-5075/20/8/003}, language = {English}, unique-id = {ISI:A1992KF31100003}, web-of-science-categories = {Physics, Multidisciplinary} } |
1992 J Courty and S Reynaud "Generalized linear input-output theory for quantum fluctuations" , Phys. Rev. A 46 2766-2777. |
Abstract: Scattering of quantum fluctuations by a linear system is entirely characterized by impedance functions that also allow the determination of the system fluctuations. We present a generalization of this linear input-output theory to the case of a nonlinear scattering system. We define response functions that are similar to the susceptibility functions of linear response theory, but behave as noncommuting quantities. These functions contain a ``dynamical'' part determined by the relaxation of the system and a ``structural'' one related to the commutators between the system observables. The generalized linear input-output theory provides us with a complete description of the system fluctuations as well as of the output reservoir fields. The consistency of the results is ensured by general relations existing between the response functions and the correlation functions. |
BibTeX:
@article{Courty1992, author = {Courty, JM and Reynaud, S}, title = {Generalized linear input-output theory for quantum fluctuations}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {1992}, volume = {46}, number = {5}, pages = {2766-2777}, doi = {10.1103/PhysRevA.46.2766}, language = {English}, unique-id = {ISI:A1992JM06300070}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1992 P Grangier, J Courty and S Reynaud "Characterization of nonideal quantum nondemolition measurements" , Opt. Commun. 89 99-106. |
Abstract: The effectiveness of quantum non-demolition (QND) measurements must be characterized by quantities which can be determined experimentally and theoretically for nonideal QND devices. We define equivalent input noises which can conveniently be used as such quantities. |
BibTeX:
@article{Grangier1992, author = {Grangier, P and Courty, JM and Reynaud, S}, title = {Characterization of nonideal quantum nondemolition measurements}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1992}, volume = {89}, number = {1}, pages = {99-106}, doi = {10.1016/0030-4018(92)90254-O}, language = {English}, unique-id = {ISI:A1992HU74700018}, web-of-science-categories = {Optics} } |
1992 L Hilico, J Courty, C Fabre, E Giacobino, I Abram and J Oudar "Squeezing with chi(3) materials" 55 202-209. |
Abstract: We assess in this paper the advantages and drawbacks of different nonlinear chi(3) materials for the purpose of generating squeezed light. The respective roles of nonlinearity, losses, response time and excess noise are discussed. Two simple models of nonlinear media are considered more precisely: parametric media with linear losses and an empty cavity with moving mirrors. |
BibTeX:
@article{Hilico1992, author = {Hilico, L and Courty, JM and Fabre, C and Giacobino, E and Abram, I and Oudar, JL}, title = {Squeezing with chi(3) materials}, journal = {APPLIED PHYSICS B-PHOTOPHYSICS AND LASER CHEMISTRY}, year = {1992}, volume = {55}, number = {3}, pages = {202-209}, doi = {10.1007/BF00325007}, language = {English}, unique-id = {ISI:A1992JM01900003}, web-of-science-categories = {Physics, Applied} } |
1992 L Hilico, C Fabre, S Reynaud and E Giacobino "Linear input-output method for quantum fluctuations in optical bistability with 2-level atoms" , Phys. Rev. A 46 4397-4405. |
Abstract: We derive the modifications of the quantum fluctuations of a coherent field after it has interacted with an optical cavity containing an ensemble of two-level atoms. The fluctuations in the output field are separated into two parts: the first one is linked to the parametric transformation of the fluctuations of the incoming field by the atomic medium; the second one is associated with the resonance fluorescence of the atoms driven by the mean intracavity field and coupled with the empty modes of a bath field. We calculate the squeezing spectra and we compare them to the ones obtained with Kerr media having similar dynamic nonlinearities. |
BibTeX:
@article{Hilico1992a, author = {Hilico, L and Fabre, C and Reynaud, S and Giacobino, E}, title = {Linear input-output method for quantum fluctuations in optical bistability with 2-level atoms}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {1992}, volume = {46}, number = {7}, pages = {4397-4405}, doi = {10.1103/PhysRevA.46.4397}, language = {English}, unique-id = {ISI:A1992JV10900099}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1992 M Jaekel and S Reynaud "Motional Casimir force" , J. Physique I 2 149-165. |
Abstract: We study the situation where two point like mirrors are placed in the vacuum state of a scalar field in a two-dimensional spacetime. Describing the scattering upon the mirrors by transmittivity and reflectivity functions obeying unitarity, causality and high frequency transparency conditions, we compute the fluctuations of the Casimir forces exerted upon the two motionless mirrors. We use the linear response theory to derive the motional forces exerted upon one mirror when it moves or when the other one moves. We show that these forces may be resonantly enhanced at the frequencies corresponding to the cavity modes. We interpret them as the mechanical consequence of generation of squeezed fields. |
BibTeX:
@article{Jaekel1992, author = {Jaekel, MT and Reynaud, S}, title = {Motional Casimir force}, journal = {JOURNAL DE PHYSIQUE I}, journal = {J. Physique I}, year = {1992}, volume = {2}, number = {2}, pages = {149-165}, language = {English}, unique-id = {ISI:A1992HA77400002}, web-of-science-categories = {Physics, Multidisciplinary} } |
1992 M Jaekel and S Reynaud "Fluctuations and dissipation for a mirror in vacuum" , Quantum Opt. 4 39-53. |
Abstract: A mirror in vacuum is submitted to a radiation pressure exerted by scattered fields. It is known that the resulting mean force is zero for a motionless mirror, but not for a mirror moving with a non-uniform acceleration. We show here that this force results from a motional modification of the field scattering while being associated with the fluctuations of the radiation pressure on a motionless mirror. We consider the case of a scalar field in a two-dimensional spacetime and characterize the scattering upon the mirror by frequency dependent transmissivity and reflectivity functions obeying unitarity, causality and high frequency transparency conditions. We derive causal expressions for dissipation and fluctuations and exhibit their relation for any stationary input. We recover the known damping force at the limit of a perfect mirror in vacuum. Finally, we interpret the force as a mechanical signature of the squeezing effect associated with the mirror's motion. |
BibTeX:
@article{Jaekel1992a, author = {Jaekel, MT and Reynaud, S}, title = {Fluctuations and dissipation for a mirror in vacuum}, journal = {QUANTUM OPTICS}, journal = {Quantum Opt.}, year = {1992}, volume = {4}, number = {1}, pages = {39-53}, language = {English}, unique-id = {ISI:A1992HG44500005}, web-of-science-categories = {Optics; Physics, Applied} } |
1992 M Jaekel and S Reynaud "Causality, stability and passivity for a mirror in vacuum" , Phys. Lett. A 167 227-232. |
Abstract: The mean force exerted upon a perfect mirror moving in vacuum (in a two-dimensional spacetime) has the same expression as the radiation reaction force computed in classical electron theory. It follows that unacceptable runaway solutions are predicted. We show that this instability problem does not appear when partially transmitting mirrors are studied. The mechanical impedance describing the mirror coupled to vacuum radiation pressure is computed explicitly (recoil is neglected). It is found to be a passive function, so that stability is ensured. This is connected to the fact that no energy can be extracted from the vacuum state. |
BibTeX:
@article{Jaekel1992b, author = {Jaekel, MT and Reynaud, S}, title = {Causality, stability and passivity for a mirror in vacuum}, journal = {PHYSICS LETTERS A}, journal = {Phys. Lett. A}, year = {1992}, volume = {167}, number = {3}, pages = {227-232}, doi = {10.1016/0375-9601(92)90195-R}, language = {English}, unique-id = {ISI:A1992JE92100001}, web-of-science-categories = {Physics, Multidisciplinary} } |
1992 S Reynaud, A Heidmann, E Giacobino and C Fabre "Quantum fluctuations in optical systems" , Prog. Optics 30 1-85. |
BibTeX:
@article{Reynaud1992, author = {Reynaud, S and Heidmann, A and Giacobino, E and Fabre, C}, title = {Quantum fluctuations in optical systems}, journal = {PROGRESS IN OPTICS}, journal = {Prog. Optics}, year = {1992}, volume = {30}, pages = {1-85}, doi = {10.1016/S0079-6638(08)70096-9}, language = {English}, unique-id = {ISI:A1992KL23600001}, web-of-science-categories = {Optics} } |
1992 J Roch, G Roger, P Grangier, J Courty and S Reynaud "Quantum nondemolition measurements in optics - A review and some recent experimental results" , Appl. Phys. B 55 291-297. |
Abstract: We review the schemes which have been implemented, in order to achieve quantum non-demolition (QND) measurements in the optical domain. The simplest schemes can be obtained using the optical Kerr effect, which yields a crossed-phase modulation coupling between two light beams. Other schemes use either independently generated squeezed light, or coupled-mode parametric amplifiers. These various schemes can be characterized using three criteria, which describe, respectively, the quality of the quantum measurement, the non-destruction of the signal, and the conditional variance of the output signal beam, given the output ``meter'' beam (quantum-state preparation criterion). We show that quantitative limits can be defined with respect to these criteria, delimiting ``classical'' and ``quantum'' domains of operation. Then we present in more detail a new experimental implementation of QND measurements, using three-level atoms inside a doubly-resonant optical cavity. |
BibTeX:
@article{Roch1992, author = {Roch, JF and Roger, G and Grangier, P and Courty, JM and Reynaud, S}, title = {Quantum nondemolition measurements in optics - A review and some recent experimental results}, journal = {APPLIED PHYSICS B-PHOTOPHYSICS AND LASER CHEMISTRY}, journal = {Appl. Phys. B}, year = {1992}, volume = {55}, number = {3}, pages = {291-297}, doi = {10.1007/BF00325017}, language = {English}, unique-id = {ISI:A1992JM01900013}, web-of-science-categories = {Physics, Applied} } |
1991 J Courtois, A Smith, C Fabre and S Reynaud "Phase diffusion and quantum noise in the optical parametric oscillator - A semiclassical approach" , J. Mod. Opt. 38 177-191. |
Abstract: We calculate by the semiclassical method the noise spectra of a non-degenerate optical parametric oscillator operating above threshold when taking into account two independent diffusion processes on the pump phase and on the signal-idler phase difference. We also show that the phase diffusion processes are important when calculating the quantum noise in an optical parametric oscillator for noise frequencies close to the beat frequency between the signal and idler modes. |
BibTeX:
@article{Courtois1991, author = {Courtois, JY and Smith, A and Fabre, C and Reynaud, S}, title = {Phase diffusion and quantum noise in the optical parametric oscillator - A semiclassical approach}, journal = {JOURNAL OF MODERN OPTICS}, journal = {J. Mod. Opt.}, year = {1991}, volume = {38}, number = {1}, pages = {177-191}, doi = {10.1080/09500349114550201}, language = {English}, unique-id = {ISI:A1991EU87000020}, web-of-science-categories = {Optics} } |
1991 J Courty, P Grangier, L Hilico and S Reynaud "Quantum fluctuations in optical bistability - Calculations from linear response theory" , Opt. Commun. 83 251-256. |
Abstract: We present a new method for computing quantum fluctuations of fields emitted by optical cavities containing atoms. The noise generation by atoms is described by atomic correlation functions. The parametric transformation of the fields by the atomic medium is described by susceptibility functions, as in linear response theory. The susceptibility functions and the correlation functions can be calculated as in the resonance fluorescence theory. The compatibility between dissipation and added fluctuations is ensured by general relations existing between these atomic functions. |
BibTeX:
@article{Courty1991, author = {Courty, JM and Grangier, P and Hilico, L and Reynaud, S}, title = {Quantum fluctuations in optical bistability - Calculations from linear response theory}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1991}, volume = {83}, number = {3-4}, pages = {251-256}, doi = {10.1016/0030-4018(91)90172-A}, language = {English}, unique-id = {ISI:A1991FR95900010}, web-of-science-categories = {Optics} } |
1991 M Jaekel and S Reynaud "Casimir force between partially transmitting mirrors" , J. Physique I 1 1395-1409. |
Abstract: The Casimir force can be understood as resulting from the radiation pressure exerted by the vacuum fluctuations reflected by boundaries. We extend this local formulation to the case of partially transmitting boundaries by introducing reflectivity and transmittivity coefficients obeying conditions of unitarity, causality and high frequency transparency. We show that the divergences associated with the infiniteness of the vacuum energy do not appear in this approach. We give explicit expressions for the Casimir force which hold for any frequency dependent scattering and any temperature. The corresponding expressions for the Casimir energy are interpreted in terms of phase shifts. The known results are recovered at the limit of a perfect reflection. |
BibTeX:
@article{Jaekel1991, author = {Jaekel, MT and Reynaud, S}, title = {Casimir force between partially transmitting mirrors}, journal = {JOURNAL DE PHYSIQUE I}, journal = {J. Physique I}, year = {1991}, volume = {1}, number = {10}, pages = {1395-1409}, language = {English}, unique-id = {ISI:A1991GH34900007}, web-of-science-categories = {Physics, Multidisciplinary} } |
1990 P Grangier, J Roch and S Reynaud
"Quantum nondemolition measurements using 2-photon nonlinearities in optical cavities" , Ann. Physique
15
9-15.
[BibTeX] |
BibTeX:
@article{Grangier1990, author = {Grangier, P and Roch, JF and Reynaud, S}, title = {Quantum nondemolition measurements using 2-photon nonlinearities in optical cavities}, journal = {ANNALES DE PHYSIQUE}, journal = {Ann. Physique}, year = {1990}, volume = {15}, number = {1, 2}, pages = {9-15}, language = {English}, unique-id = {ISI:A1990DC82000003}, web-of-science-categories = {Physics, Multidisciplinary} } |
1990 M Jaekel and S Reynaud "Quantum limits in interferometric measurements" , Europhys. Lett. 13 301-306. |
BibTeX:
@article{Jaekel1990, author = {Jaekel, MT and Reynaud, S}, title = {Quantum limits in interferometric measurements}, journal = {EUROPHYSICS LETTERS}, journal = {Europhys. Lett.}, year = {1990}, volume = {13}, number = {4}, pages = {301-306}, doi = {10.1209/0295-5075/13/4/003}, language = {English}, unique-id = {ISI:A1990EE08200003}, web-of-science-categories = {Physics, Multidisciplinary} } |
1990 J Mertz, A Heidmann, C Fabre, E Giacobino and S Reynaud "Observation of high-intensity sub-Poissonian light using an optical parametric oscillator" , Phys. Rev. Lett. 64 2897-2900. |
BibTeX:
@article{Mertz1990, author = {Mertz, J and Heidmann, A and Fabre, C and Giacobino, E and Reynaud, S}, title = {Observation of high-intensity sub-Poissonian light using an optical parametric oscillator}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {1990}, volume = {64}, number = {24}, pages = {2897-2900}, doi = {10.1103/PhysRevLett.64.2897}, language = {English}, unique-id = {ISI:A1990DH37500016}, web-of-science-categories = {Physics, Multidisciplinary} } |
1990 S Reynaud, T Debuisschert, J Mertz, C Aminoff, C Fabre, E Giacobino, A Heidmann and L HILICO
"Reduction of quantum noise" , Ann. Physique
15
3-8.
[BibTeX] |
BibTeX:
@article{Reynaud1990, author = {Reynaud, S and Debuisschert, T and Mertz, J and Aminoff, C and Fabre, C and Giacobino, E and Heidmann, A and HILICO, L}, title = {Reduction of quantum noise}, journal = {ANNALES DE PHYSIQUE}, journal = {Ann. Physique}, year = {1990}, volume = {15}, number = {1, 2}, pages = {3-8}, language = {French}, unique-id = {ISI:A1990DC82000002}, web-of-science-categories = {Physics, Multidisciplinary} } |
1990 S Reynaud "An introduction to the reduction of quantum noise" , Ann. Physique 15 63-162. |
BibTeX:
@article{Reynaud1990a, author = {Reynaud, S}, title = {An introduction to the reduction of quantum noise}, journal = {ANNALES DE PHYSIQUE}, journal = {Ann. Physique}, year = {1990}, volume = {15}, number = {2}, pages = {63-162}, doi = {10.1051/anphys:0199000150206300}, language = {French}, unique-id = {ISI:A1990DJ81300001}, web-of-science-categories = {Physics, Multidisciplinary} } |
1989 J Courty and S Reynaud "Squeezing a mono-dimensional field using a single 2-level atom" , Opt. Commun. 72 93-98. |
BibTeX:
@article{Courty1989, author = {Courty, JM and Reynaud, S}, title = {Squeezing a mono-dimensional field using a single 2-level atom}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1989}, volume = {72}, number = {1-2}, pages = {93-98}, doi = {10.1016/0030-4018(89)90262-9}, language = {English}, unique-id = {ISI:A1989AF67900017}, web-of-science-categories = {Optics} } |
1989 J Courty and S Reynaud "Dressed population trapping for a 2-level atom in a squeezed vacuum" , Europhys. Lett. 10 237-242. |
BibTeX:
@article{Courty1989a, author = {Courty, JM and Reynaud, S}, title = {Dressed population trapping for a 2-level atom in a squeezed vacuum}, journal = {EUROPHYSICS LETTERS}, journal = {Europhys. Lett.}, year = {1989}, volume = {10}, number = {3}, pages = {237-242}, doi = {10.1209/0295-5075/10/3/009}, language = {English}, unique-id = {ISI:A1989AT09400009}, web-of-science-categories = {Physics, Multidisciplinary} } |
1989 C Fabre, E Giacobino, A Heidmann and S Reynaud "Noise characteristics of a non-degenerate optical parametric oscillator - Application to quantum noise reduction" , J. Physique 50 1209-1225. |
BibTeX:
@article{Fabre1989, author = {Fabre, C and Giacobino, E and Heidmann, A and Reynaud, S}, title = {Noise characteristics of a non-degenerate optical parametric oscillator - Application to quantum noise reduction}, journal = {JOURNAL DE PHYSIQUE}, journal = {J. Physique}, year = {1989}, volume = {50}, number = {10}, pages = {1209-1225}, doi = {10.1051/jphys:0198900500100120900}, language = {English}, unique-id = {ISI:A1989U835900008} } |
1989 P Grangier, J Roch and S Reynaud "Quantum correlations and non-demolition measurements using 2-photon non-linearities in optical cavities" , Opt. Commun. 72 387-392. |
BibTeX:
@article{Grangier1989, author = {Grangier, P and Roch, JF and Reynaud, S}, title = {Quantum correlations and non-demolition measurements using 2-photon non-linearities in optical cavities}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1989}, volume = {72}, number = {6}, pages = {387-392}, doi = {10.1016/0030-4018(89)90446-X}, language = {English}, unique-id = {ISI:A1989AL79300011}, web-of-science-categories = {Optics} } |
1989 S Reynaud, C Fabre, E Giacobino and A Heidmann "Photon noise-reduction by passive optical bistable systems" , Phys. Rev. A 40 1440-1446. |
BibTeX:
@article{Reynaud1989, author = {Reynaud, S and Fabre, C and Giacobino, E and Heidmann, A}, title = {Photon noise-reduction by passive optical bistable systems}, journal = {PHYSICAL REVIEW A}, journal = {Phys. Rev. A}, year = {1989}, volume = {40}, number = {3}, pages = {1440-1446}, doi = {10.1103/PhysRevA.40.1440}, language = {English}, unique-id = {ISI:A1989AJ39500034}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1989 S Reynaud and A Heidmann "A semiclassical linear input output transformation for quantum fluctuations" , Opt. Commun. 71 209-214. |
BibTeX:
@article{Reynaud1989a, author = {Reynaud, S and Heidmann, A}, title = {A semiclassical linear input output transformation for quantum fluctuations}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1989}, volume = {71}, number = {3-4}, pages = {209-214}, doi = {10.1016/0030-4018(89)90429-X}, language = {English}, unique-id = {ISI:A1989U659300020}, web-of-science-categories = {Optics} } |
1988 S Reynaud, J Dalibard and C Cohen-Tannoudji "Photon statistics and quantum jumps - The picture of the dressed atom radiative cascade" , IEEE J. Quantum Electron. 24 1395-1402. |
BibTeX:
@article{Reynaud1988, author = {Reynaud, S and Dalibard, J and Cohen-Tannoudji, C}, title = {Photon statistics and quantum jumps - The picture of the dressed atom radiative cascade}, journal = {IEEE JOURNAL OF QUANTUM ELECTRONICS}, journal = {IEEE J. Quantum Electron.}, year = {1988}, volume = {24}, number = {7}, pages = {1395-1402}, doi = {10.1109/3.979}, language = {English}, unique-id = {ISI:A1988P509500023}, web-of-science-categories = {Engineering, Electrical & Electronic; Optics; Physics, Applied} } |
1988 S Reynaud and E Giacobino "Squeezing in bistable optical systems" , J. Physique 49 477-482. |
BibTeX:
@article{Reynaud1988a, author = {Reynaud, S and Giacobino, E}, title = {Squeezing in bistable optical systems}, journal = {JOURNAL DE PHYSIQUE}, journal = {J. Physique}, year = {1988}, volume = {49}, number = {C-2}, pages = {477-482}, doi = {10.1051/jphyscol:19882112}, language = {English}, unique-id = {ISI:A1988P724200113} } |
1987 H Bercegol, E Charpentier, J Courty and J Wesfreid "Anisotropy effects in ferrofluid instabilities" , Phys. Lett. A 121 311-316. |
BibTeX:
@article{Bercegol1987, author = {Bercegol, H and Charpentier, E and Courty, JM and Wesfreid, Je}, title = {Anisotropy effects in ferrofluid instabilities}, journal = {PHYSICS LETTERS A}, journal = {Phys. Lett. A}, year = {1987}, volume = {121}, number = {6}, pages = {311-316}, doi = {10.1016/0375-9601(87)90536-6}, language = {English}, unique-id = {ISI:A1987H442100013}, web-of-science-categories = {Physics, Multidisciplinary} } |
1987 E Giacobino, C Fabre, A Heidmann, R Horowicz, S Reynaud, D Grandclement, G Grynberg and M Pinard "Generation of non classical states of light by phase conjugation and parametric conversion" , Hyperfine Interact. 37 109-124. |
BibTeX:
@article{Giacobino1987, author = {Giacobino, E and Fabre, C and Heidmann, A and Horowicz, R and Reynaud, S and Grandclement, D and Grynberg, G and Pinard, M}, title = {Generation of non classical states of light by phase conjugation and parametric conversion}, journal = {HYPERFINE INTERACTIONS}, journal = {Hyperfine Interact.}, year = {1987}, volume = {37}, number = {1-4}, pages = {109-124}, doi = {10.1007/BF02395706}, language = {English}, unique-id = {ISI:A1987L861100007}, web-of-science-categories = {Physics, Atomic, Molecular & Chemical; Physics, Condensed Matter; Physics, Nuclear} } |
1987 A Heidmann and S Reynaud "Squeezing and antibunching in phase-matched many-atom resonance fluorescence" , J. Mod. Opt. 34 923-940. |
BibTeX:
@article{Heidmann1987, author = {Heidmann, A and Reynaud, S}, title = {Squeezing and antibunching in phase-matched many-atom resonance fluorescence}, journal = {JOURNAL OF MODERN OPTICS}, journal = {J. Mod. Opt.}, year = {1987}, volume = {34}, number = {6-7}, pages = {923-940}, doi = {10.1080/09500348714550841}, language = {English}, unique-id = {ISI:A1987J991300013}, web-of-science-categories = {Optics} } |
1987 A Heidmann, R Horowicz, S Reynaud, E Giacobino, C Fabre and G Camy "Observation of quantum noise-reduction on twin laser beams" , Phys. Rev. Lett. 59 2555-2557. |
BibTeX:
@article{Heidmann1987a, author = {Heidmann, A and Horowicz, RJ and Reynaud, S and Giacobino, E and Fabre, C and Camy, G}, title = {Observation of quantum noise-reduction on twin laser beams}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {1987}, volume = {59}, number = {22}, pages = {2555-2557}, doi = {10.1103/PhysRevLett.59.2555}, language = {English}, unique-id = {ISI:A1987K955600015}, web-of-science-categories = {Physics, Multidisciplinary} } |
1987 R Horowicz, M Pinard and S Reynaud "Generation of twin photon beams through intracavity 4-wave-mixing" , Opt. Commun. 61 142-146. |
BibTeX:
@article{Horowicz1987, author = {Horowicz, R and Pinard, M and Reynaud, S}, title = {Generation of twin photon beams through intracavity 4-wave-mixing}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1987}, volume = {61}, number = {2}, pages = {142-146}, doi = {10.1016/0030-4018(87)90236-7}, language = {English}, unique-id = {ISI:A1987G399200012}, web-of-science-categories = {Optics} } |
1987 S Reynaud "Generation of twin photon beams by a nondegenerate optical parametric oscillator" , Europhys. Lett. 4 427-432. |
BibTeX:
@article{Reynaud1987, author = {Reynaud, S}, title = {Generation of twin photon beams by a nondegenerate optical parametric oscillator}, journal = {EUROPHYSICS LETTERS}, journal = {Europhys. Lett.}, year = {1987}, volume = {4}, number = {4}, pages = {427-432}, doi = {10.1209/0295-5075/4/4/008}, language = {English}, unique-id = {ISI:A1987J508300008}, web-of-science-categories = {Physics, Multidisciplinary} } |
1987 S Reynaud, C Fabre and E Giacobino "Quantum fluctuations in a 2-mode parametric oscillator" , J. Opt. Soc. Am. B-Opt. Phys. 4 1520-1524. |
BibTeX:
@article{Reynaud1987a, author = {Reynaud, S and Fabre, C and Giacobino, E}, title = {Quantum fluctuations in a 2-mode parametric oscillator}, journal = {JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS}, journal = {J. Opt. Soc. Am. B-Opt. Phys.}, year = {1987}, volume = {4}, number = {10}, pages = {1520-1524}, doi = {10.1364/JOSAB.4.001520}, language = {English}, unique-id = {ISI:A1987K466900008}, web-of-science-categories = {Optics} } |
1986 P Grangier, G Roger, A Aspect, A Heidmann and S Reynaud "Observation of photon antibunching in phase-matched multiatom resonance fluorescence" , Phys. Rev. Lett. 57 687-690. |
BibTeX:
@article{Grangier1986, author = {Grangier, P and Roger, G and Aspect, A and Heidmann, A and Reynaud, S}, title = {Observation of photon antibunching in phase-matched multiatom resonance fluorescence}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {1986}, volume = {57}, number = {6}, pages = {687-690}, doi = {10.1103/PhysRevLett.57.687}, language = {English}, unique-id = {ISI:A1986D522900009}, web-of-science-categories = {Physics, Multidisciplinary} } |
1985 A Heidmann, J Raimond and S Reynaud "Squeezing in a Rydberg atom maser" , Phys. Rev. Lett. 54 326-328. |
BibTeX:
@article{Heidmann1985, author = {Heidmann, A and Raimond, JM and Reynaud, S}, title = {Squeezing in a Rydberg atom maser}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {1985}, volume = {54}, number = {4}, pages = {326-328}, doi = {10.1103/PhysRevLett.54.326}, language = {English}, unique-id = {ISI:A1985AAM0100021}, web-of-science-categories = {Physics, Multidisciplinary} } |
1985 A Heidmann, J Raimond, S Reynaud and N Zagury
"Squeezing in a Rydberg atom maser - effect of damping and thermal field" , Opt. Commun.
54
53-56.
[BibTeX] |
BibTeX:
@article{Heidmann1985a, author = {Heidmann, A and Raimond, JM and Reynaud, S and Zagury, N}, title = {Squeezing in a Rydberg atom maser - effect of damping and thermal field}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1985}, volume = {54}, number = {1}, pages = {53-56}, language = {English}, unique-id = {ISI:A1985AJR8400010}, web-of-science-categories = {Optics} } |
1985 A Heidmann, J Raimond, S Reynaud and N Zagury "1/N expansion of the statistical properties of the N Rydberg atoms maser - application to squeezing" , Opt. Commun. 54 189-194. |
BibTeX:
@article{Heidmann1985b, author = {Heidmann, A and Raimond, JM and Reynaud, S and Zagury, N}, title = {1/N expansion of the statistical properties of the N Rydberg atoms maser - application to squeezing}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1985}, volume = {54}, number = {3}, pages = {189-194}, doi = {10.1016/0030-4018(85)90289-5}, language = {English}, unique-id = {ISI:A1985AKW6600013}, web-of-science-categories = {Optics} } |
1985 A Heidmann and S Reynaud "Squeezing in the many atom resonance fluorescence emitted in the forward direction - Application to photon noise-reduction" , J. Physique 46 1937-1948. |
BibTeX:
@article{Heidmann1985c, author = {Heidmann, A and Reynaud, S}, title = {Squeezing in the many atom resonance fluorescence emitted in the forward direction - Application to photon noise-reduction}, journal = {JOURNAL DE PHYSIQUE}, journal = {J. Physique}, year = {1985}, volume = {46}, number = {11}, pages = {1937-1948}, doi = {10.1051/jphys:0198500460110193700}, language = {English}, unique-id = {ISI:A1985AVB3000014} } |
1985 S Reynaud and A Heidmann "Can photon noise be reduced ?" , Ann. Physique 10 227-239. |
BibTeX:
@article{Reynaud1985, author = {Reynaud, S and Heidmann, A}, title = {Can photon noise be reduced ?}, journal = {ANNALES DE PHYSIQUE}, journal = {Ann. Physique}, year = {1985}, volume = {10}, number = {3}, pages = {227-239}, doi = {10.1051/anphys:01985001003022700}, language = {English}, unique-id = {ISI:A1985AHV1500004}, web-of-science-categories = {Physics, Multidisciplinary} } |
1984 J Dalibard, S Reynaud and C Cohen-Tannoudji "Potentialities of a new sigma+-sigma- laser configuration for radiative cooling and trapping" , J. Phys. B-At. Mol. Opt. Phys. 17 4577-4594. |
BibTeX:
@article{Dalibard1984, author = {Dalibard, J and Reynaud, S and Cohen-Tannoudji, C}, title = {Potentialities of a new sigma+-sigma- laser configuration for radiative cooling and trapping}, journal = {JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS}, journal = {J. Phys. B-At. Mol. Opt. Phys.}, year = {1984}, volume = {17}, number = {22}, pages = {4577-4594}, doi = {10.1088/0022-3700/17/22/018}, language = {English}, unique-id = {ISI:A1984TU27900018}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1984 A Heidmann, S Reynaud and C Cohen-Tannoudji "Photon noise reduction and coherence properties of squeezed fields" , Opt. Commun. 52 235-240. |
BibTeX:
@article{Heidmann1984, author = {Heidmann, A and Reynaud, S and Cohen-Tannoudji, C}, title = {Photon noise reduction and coherence properties of squeezed fields}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1984}, volume = {52}, number = {4}, pages = {235-240}, doi = {10.1016/0030-4018(85)90218-4}, language = {English}, unique-id = {ISI:A1984ABG9900001}, web-of-science-categories = {Optics} } |
1984 A Heidmann and S Reynaud "Correlations in single photon amplification - Stimulated versus spontaneous processes" , J. Physique 45 873-883. |
BibTeX:
@article{Heidmann1984a, author = {Heidmann, A and Reynaud, S}, title = {Correlations in single photon amplification - Stimulated versus spontaneous processes}, journal = {JOURNAL DE PHYSIQUE}, journal = {J. Physique}, year = {1984}, volume = {45}, number = {5}, pages = {873-883}, doi = {10.1051/jphys:01984004505087300}, language = {English}, unique-id = {ISI:A1984SS56600008} } |
1984 A Heidmann and S Reynaud
"Can the photon noise be reduced ?" , Lecture Notes Phys.
212
226-231.
[BibTeX] |
BibTeX:
@article{Heidmann1984b, author = {Heidmann, A and Reynaud, S}, title = {Can the photon noise be reduced ?}, journal = {LECTURE NOTES IN PHYSICS}, journal = {Lecture Notes Phys.}, year = {1984}, volume = {212}, pages = {226-231}, language = {English}, unique-id = {ISI:A1984TZ59400024}, web-of-science-categories = {Physics, Applied; Physics, Multidisciplinary} } |
1984 S Reynaud and A Heidmann "Generation of squeezed states of light - A critical discussion" , Opt. Commun. 50 271-274. |
BibTeX:
@article{Reynaud1984, author = {Reynaud, S and Heidmann, A}, title = {Generation of squeezed states of light - A critical discussion}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1984}, volume = {50}, number = {4}, pages = {271-274}, doi = {10.1016/0030-4018(84)90331-6}, language = {English}, unique-id = {ISI:A1984TA37400014}, web-of-science-categories = {Optics} } |
1984 C Tanguy, S Reynaud and C Cohen-Tannoudji "Deflection of an atomic beam by a laser wave - Transition between diffractive and diffusive regimes" , J. Phys. B-At. Mol. Opt. Phys. 17 4623-4641. |
BibTeX:
@article{Tanguy1984, author = {Tanguy, C and Reynaud, S and Cohen-Tannoudji, C}, title = {Deflection of an atomic beam by a laser wave - Transition between diffractive and diffusive regimes}, journal = {JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS}, journal = {J. Phys. B-At. Mol. Opt. Phys.}, year = {1984}, volume = {17}, number = {23}, pages = {4623-4641}, doi = {10.1088/0022-3700/17/23/009}, language = {English}, unique-id = {ISI:A1984TW83400009}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1983 J Dalibard, S Reynaud and C Cohen-Tannoudji "Proposals of stable optical traps for neutral atoms" , Opt. Commun. 47 395-399. |
BibTeX:
@article{Dalibard1983, author = {Dalibard, J and Reynaud, S and Cohen-Tannoudji, C}, title = {Proposals of stable optical traps for neutral atoms}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1983}, volume = {47}, number = {6}, pages = {395-399}, doi = {10.1016/0030-4018(83)90314-0}, language = {English}, unique-id = {ISI:A1983RQ10800008}, web-of-science-categories = {Optics} } |
1983 J Dalibard and S Reynaud "Correlation signals in resonance fluorescence - Interpretation via photon scattering amplitudes" , J. Physique 44 1337-1343. |
BibTeX:
@article{Dalibard1983a, author = {Dalibard, J and Reynaud, S}, title = {Correlation signals in resonance fluorescence - Interpretation via photon scattering amplitudes}, journal = {JOURNAL DE PHYSIQUE}, journal = {J. Physique}, year = {1983}, volume = {44}, number = {12}, pages = {1337-1343}, doi = {10.1051/jphys:0198300440120133700}, language = {English}, unique-id = {ISI:A1983RV51600002} } |
1983 S Reynaud
"Resonance fluorescence - The dressed atom approach" , Ann. Physique
8
315-370.
[BibTeX] |
BibTeX:
@article{Reynaud1983, author = {Reynaud, S}, title = {Resonance fluorescence - The dressed atom approach}, journal = {ANNALES DE PHYSIQUE}, journal = {Ann. Physique}, year = {1983}, volume = {8}, number = {4}, pages = {315-370}, language = {French}, unique-id = {ISI:A1983RQ14800001}, web-of-science-categories = {Physics, Multidisciplinary} } |
1983 S Reynaud
"Fluorescence and absorption-spectra of a laser-excited vapor - The dressed atom approach" , Ann. Physique
8
371-416.
[BibTeX] |
BibTeX:
@article{Reynaud1983a, author = {Reynaud, S}, title = {Fluorescence and absorption-spectra of a laser-excited vapor - The dressed atom approach}, journal = {ANNALES DE PHYSIQUE}, journal = {Ann. Physique}, year = {1983}, volume = {8}, number = {4}, pages = {371-416}, language = {French}, unique-id = {ISI:A1983RQ14800002}, web-of-science-categories = {Physics, Multidisciplinary} } |
1983 C Tanguy, S Reynaud, M Matsuoka and C Cohen-Tannoudji "Deflection profiles of a monoenergetic atomic beam crossing a standing light-wave" , Opt. Commun. 44 249-253. |
BibTeX:
@article{Tanguy1983, author = {Tanguy, C and Reynaud, S and Matsuoka, M and Cohen-Tannoudji, C}, title = {Deflection profiles of a monoenergetic atomic beam crossing a standing light-wave}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1983}, volume = {44}, number = {4}, pages = {249-253}, doi = {10.1016/0030-4018(83)90131-1}, language = {English}, unique-id = {ISI:A1983QC34600007}, web-of-science-categories = {Optics} } |
1982 S Reynaud, M Himbert, J Dalibard, J Dupont-Roc and C Cohen-Tannoudji "Compensation of Doppler broadening by light shifts in 2-photon absorption" , Opt. Commun. 42 39-44. |
BibTeX:
@article{Reynaud1982, author = {Reynaud, S and Himbert, M and Dalibard, J and Dupont-Roc, J and Cohen-Tannoudji, C}, title = {Compensation of Doppler broadening by light shifts in 2-photon absorption}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1982}, volume = {42}, number = {1}, pages = {39-44}, doi = {10.1016/0030-4018(82)90086-4}, language = {English}, unique-id = {ISI:A1982NT38200009}, web-of-science-categories = {Optics} } |
1982 S Reynaud and C Cohen-Tannoudji "Dressed atom approach to collisional redistribution" , J. Physique 43 1021-1035. |
BibTeX:
@article{Reynaud1982a, author = {Reynaud, S and Cohen-Tannoudji, C}, title = {Dressed atom approach to collisional redistribution}, journal = {JOURNAL DE PHYSIQUE}, journal = {J. Physique}, year = {1982}, volume = {43}, number = {7}, pages = {1021-1035}, doi = {10.1051/jphys:019820043070102100}, language = {English}, unique-id = {ISI:A1982NW88600003} } |
1980 A Aspect, G Roger, S Reynaud, J Dalibard and C Cohen-Tannoudji "Time correlations between the 2 sidebands of the resonance fluorescence triplet" , Phys. Rev. Lett. 45 617-620. |
BibTeX:
@article{Aspect1980, author = {Aspect, A and Roger, G and Reynaud, S and Dalibard, J and Cohen-Tannoudji, C}, title = {Time correlations between the 2 sidebands of the resonance fluorescence triplet}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {1980}, volume = {45}, number = {8}, pages = {617-620}, doi = {10.1103/PhysRevLett.45.617}, language = {English}, unique-id = {ISI:A1980KD94400009}, web-of-science-categories = {Physics, Multidisciplinary} } |
1979 C Cohen-Tannoudji and S Reynaud "Atoms in strong light-fields - Photon antibunching in single atom fluorescence" , Philos. Trans. R. Soc. A-Math. Phys. Eng. Sci. 293 223-237. |
BibTeX:
@article{Cohen-Tannoudji1979, author = {Cohen-Tannoudji, C and Reynaud, S}, title = {Atoms in strong light-fields - Photon antibunching in single atom fluorescence}, journal = {PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES}, journal = {Philos. Trans. R. Soc. A-Math. Phys. Eng. Sci.}, year = {1979}, volume = {293}, number = {1402}, pages = {223-237}, doi = {10.1098/rsta.1979.0092}, language = {English}, unique-id = {ISI:A1979JA84000004}, web-of-science-categories = {Multidisciplinary Sciences} } |
1979 M Himbert, S Reynaud, J Dupont-Roc and C Cohen-Tannoudji "New type of resonances in saturated absorption spectroscopy of 3-level systems" , Opt. Commun. 30 184-188. |
BibTeX:
@article{Himbert1979, author = {Himbert, M and Reynaud, S and Dupont-Roc, J and Cohen-Tannoudji, C}, title = {New type of resonances in saturated absorption spectroscopy of 3-level systems}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1979}, volume = {30}, number = {2}, pages = {184-188}, doi = {10.1016/0030-4018(79)90072-5}, language = {English}, unique-id = {ISI:A1979HJ38700012}, web-of-science-categories = {Optics} } |
1979 S Reynaud, M Himbert, J Dupont-Roc, H Stroke and C Cohen-Tannoudji "Experimental evidence for compensation of Doppler broadening by light-shifts" , Phys. Rev. Lett. 42 756-759. |
BibTeX:
@article{Reynaud1979, author = {Reynaud, S and Himbert, M and Dupont-Roc, J and Stroke, HH and Cohen-Tannoudji, C}, title = {Experimental evidence for compensation of Doppler broadening by light-shifts}, journal = {PHYSICAL REVIEW LETTERS}, journal = {Phys. Rev. Lett.}, year = {1979}, volume = {42}, number = {12}, pages = {756-759}, doi = {10.1103/PhysRevLett.42.756}, language = {English}, unique-id = {ISI:A1979GN02800003}, web-of-science-categories = {Physics, Multidisciplinary} } |
1978 C Cohen-Tannoudji, F Hoffbeck and S Reynaud "Compensating Doppler broadening with light-shifts" , Opt. Commun. 27 71-75. |
BibTeX:
@article{Cohen-Tannoudji1978, author = {Cohen-Tannoudji, C and Hoffbeck, F and Reynaud, S}, title = {Compensating Doppler broadening with light-shifts}, journal = {OPTICS COMMUNICATIONS}, journal = {Opt. Commun.}, year = {1978}, volume = {27}, number = {1}, pages = {71-75}, doi = {10.1016/0030-4018(78)90176-1}, language = {English}, unique-id = {ISI:A1978FV40000016}, web-of-science-categories = {Optics} } |
1977 C Cohen-Tannoudji and S Reynaud "Dressed-atom description of resonance fluorescence and absorption spectra of a multilevel atom in an intense laser beam" , J. Phys. B-At. Mol. Opt. Phys. 10 345-363. |
BibTeX:
@article{Cohen-Tannoudji1977, author = {Cohen-Tannoudji, C and Reynaud, S}, title = {Dressed-atom description of resonance fluorescence and absorption spectra of a multilevel atom in an intense laser beam}, journal = {JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS}, journal = {J. Phys. B-At. Mol. Opt. Phys.}, year = {1977}, volume = {10}, number = {3}, pages = {345-363}, doi = {10.1088/0022-3700/10/3/005}, language = {English}, unique-id = {ISI:A1977DA88200005}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1977 C Cohen-Tannoudji and S Reynaud "Modification of resonance Raman scattering in very intense laser fields" , J. Phys. B-At. Mol. Opt. Phys. 10 365-383. |
BibTeX:
@article{Cohen-Tannoudji1977a, author = {Cohen-Tannoudji, C and Reynaud, S}, title = {Modification of resonance Raman scattering in very intense laser fields}, journal = {JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS}, journal = {J. Phys. B-At. Mol. Opt. Phys.}, year = {1977}, volume = {10}, number = {3}, pages = {365-383}, doi = {10.1088/0022-3700/10/3/006}, language = {English}, unique-id = {ISI:A1977DA88200006}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |
1977 C Cohen-Tannoudji and S Reynaud
"Effect of Zeeman degeneracies on resonance fluorescence induced by an intense laser beam" , J. Physique
38
L173-L176.
[BibTeX] |
BibTeX:
@article{Cohen-Tannoudji1977b, author = {Cohen-Tannoudji, C and Reynaud, S}, title = {Effect of Zeeman degeneracies on resonance fluorescence induced by an intense laser beam}, journal = {JOURNAL DE PHYSIQUE LETTRES}, journal = {J. Physique}, year = {1977}, volume = {38}, number = {8}, pages = {L173-L176}, language = {French}, unique-id = {ISI:A1977DE70500001}, web-of-science-categories = {Physics, Multidisciplinary} } |
1977 C Cohen-Tannoudji and S Reynaud "Simultaneous saturation of 2 atomic transitions sharing a common level" , J. Phys. B-At. Mol. Opt. Phys. 10 2311-2331. |
BibTeX:
@article{Cohen-Tannoudji1977c, author = {Cohen-Tannoudji, C and Reynaud, S}, title = {Simultaneous saturation of 2 atomic transitions sharing a common level}, journal = {JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS}, journal = {J. Phys. B-At. Mol. Opt. Phys.}, year = {1977}, volume = {10}, number = {12}, pages = {2311-2331}, doi = {10.1088/0022-3700/10/12/010}, language = {English}, unique-id = {ISI:A1977DU88500010}, web-of-science-categories = {Optics; Physics, Atomic, Molecular & Chemical} } |