LKB - Bose-Einstein condensates


Collège de France
11 Place Marcelin Berthelot
75005 Paris


Raphael Lopes

(please visit our new website:
CNRS Researcher

Short CV

Since 2018: Research scientist at CNRS
2015-2018: Postdoc at the Cavendish Laboratory, Cambridge UK in Zoran Hadzibabic’s group
2012-2015: Ph.D. at Institut d’Optique, Palaiseau, France:  An atomic Hong-Ou-Mandel experiment (see also Prix Daniel Guinier 2015 )


Main topic: quantum gases & many-body physics

Ongoing projects :
 Ultracold Dysprosium gases
 Mixture in mixed dimensions

Coordinator of the Mix2Dim project (funding ANR-JCJC) 2021 – 2025







• Simulating two-dimensional dynamics within a large-size atomic spin A. Fabre, J.-B. Bouhiron, T. Satoor, R. Lopes, S. Nascimbene

• Laughlin’s topological charge pump in an atomic Hall cylinder A. Fabre, J.-B. Bouhiron, T. Satoor, R. Lopes, S. Nascimbene



• Partitioning dysprosium’s electronic spin to reveal entanglement in non-classical states Phys. Rev. Research, 3, 043001 (2021)  & T. Satoor, A. Fabre, J.-B. Bouhiron, A. Evrard, R. Lopes, S. Nascimbene

• Radio-frequency evaporation in an optical dipole trap Phys. Rev. A, 104, 033313 (2021)  & R. Lopes

• Observation of first and second sound in a BKT superfluid Nature, 594, 191–194 (2021)  &
P. Christodoulou, M. Galka, N. Dogra, R. Lopes, J. Schmitt, Z. Hadzibabic   See also News & Views in Nature Physics by Sandro Stringari

• Many-Body Decay of the Gapped Lowest Excitation of a Bose-Einstein Condensate Phys. Rev. Lett. (2021)  & J. Zhang, C. Eigen, W. Zheng, J. A. P. Glidden, T. A. Hilker, S. J. Garratt, R. Lopes, N. R. Cooper, Z. Hadzibabic, N. Navon


• Probing chiral edge dynamics and bulk topology of a synthetic Hall system Nat. Phys. (2020)  & T. Chalopin, T. Satoor, A. Evrard, V. Makhalov, J. Dalibard, R. Lopes, S. Nascimbene


• Synthetic dissipation and cascade fluxes in a turbulent quantum gas Science 366, 6463 (2019)  & N. Navon, C. Eigen, J. Zhang, R. Lopes, A. L. Gaunt, K. Fujimoto, M. Tsubota, R. P. Smith, Z. Hadzibabic

• Probing Quantum Criticality and Symmetry Breaking at the Microscopic Level Phys. Rev. Lett. 123, 120601 (2019)  & V. Makhalov, T. Satoor, A. Evrard, T. Chalopin, R. Lopes, S. Nascimbene

• Enhanced Magnetic Sensitivity with Non-Gaussian Quantum Fluctuations Phys. Rev. Lett. 122, 173601 (2019)  & A. Evrard, V. Makhalov, T. Chalopin, L. A. Sidorenkov, J. Dalibard, R. Lopes, S. Nascimbene

• From single-particle excitations to sound waves in a box-trapped atomic BEC Phys. Rev. A. 99, 021601(R) (2019)  & S. J. Garratt, C. Eigen, J. Zhang, P. Turzák, R. Lopes, R. P. Smith, Z. Hadzibabic, N. Navon Editor’s suggestion


• Universal prethermal dynamics of Bose gases quenched to unitarity Nature, 563, 221–224 (2018) & C. Eigen, J. A. P. Glidden, R. Lopes, E. A. Cornell, R. P. Smith, Z. Hadzibabic See also  News & Views See also  2018 Breakthrough of the Year by Physics World

• Anisotropic light shift and magic polarization of the intercombination line of dysprosium atoms in a far-detuned dipole trap Phys. Rev. A 98, 040502(R) (2018) & T. Chalopin, V. Makhalov, C. Bouazza, A. Evrard, A. Barker, M. Lepers, J-F. Wyart, O. Dulieu, J. Dalibard, R. Lopes, S. Nascimbene

• Elliptic flow in a strongly interacting normal Bose gas Phys. Rev. A 98, 011601(R)  (2018) & R. J. Fletcher, J. Man, R. Lopes, P. Christodoulou, J. Schmitt, M. Sohmen, N. Navon, R. P. Smith, Z. Hadzibabic


• Universal Scaling Laws in the Dynamics of a Homogeneous Unitary Bose Gas Phys. Rev. Lett. 119, 250404 (2017) & C. Eigen, J. A. P. Glidden, R. Lopes, N. Navon, Z. Hadzibabic, R. P. Smith

• Two-Particle Four-Mode Interferometer for Atoms Phys. Rev. Lett. 119, 173202 (2017) & P. Dussarrat, M. Perrier, A. Imanaliev, R. Lopes, A. Aspect, M. Cheneau, D. Boiron, C. I. Westbrook Editor’s suggestion

• Quantum Depletion of a Homogeneous Bose-Einstein Condensate Phys. Rev. Lett. 119, 190404 (2017) & R. Lopes, C. Eigen, N. Navon, D. Clément, R. P. Smith, Z. Hadzibabic Editor’s suggestion & Featured in Physics

• Quasiparticle Energy in a Strongly Interacting Homogeneous Bose-Einstein Condensate Phys. Rev. Lett. 118, 210401 (2017) & R. Lopes, C. Eigen, A. Barker, K. G. H. Viebahn, M. Robert-de-Saint-Vincent, N. Navon, Z. Hadzibabic, R. P. Smith

• Two- and three-body contacts in the unitary Bose gas Science 355 (6323), 377-380 (2017) & R. J. Fletcher, R. Lopes, J. Man, N.Navon, R. P. Smith, M. W. Zwierlein, Z. Hadzibabic


• Atomic Hong–Ou–Mandel experiment Nature, 520, 66–68 (2015) & R. Lopes, A. Imanaliev, A. Aspect, M. Cheneau, D. Boiron & C. I. Westbrook See also  News & Views 

• Second-order coherence of superradiance from a Bose-Einstein condensate Phys. Rev. A 90, 013615 (2014) & R. Lopes, A. Imanaliev, M. Bonneau, J. Ruaudel, M. Cheneau, D. Boiron, and C. I. Westbrook

• Tunable source of correlated atom beams Phys. Rev. A 87, 061603(R) (2013) & M. Bonneau, J. Ruaudel, R. Lopes, J.-C. Jaskula, A. Aspect, D. Boiron, and C. I. Westbrook

• Acoustic Analog to the Dynamical Casimir Effect in a Bose-Einstein Condensate Phys. Rev. Lett. 109, 220401 (2012) & J.-C. Jaskula, G. B. Partridge, M. Bonneau, R. Lopes, J. Ruaudel, D. Boiron, and C. I. Westbrook Editors’ suggestion &  Featured in Physics

• Violation of the Cauchy-Schwarz Inequality with Matter Waves Phys. Rev. Lett. 108, 260401 (2012) & K. V. Kheruntsyan, J.-C. Jaskula, P. Deuar, M. Bonneau, G. B. Partridge, J. Ruaudel, R. Lopes, D. Boiron, and C. I. Westbrook Editors’ suggestion &  Featured in Physics

• Formation of H3− by radiative association of H2 and H− in the interstellar medium  Phys. Rev. A 83, 052712 (2011) & M. Ayouz, R. Lopes, M. Raoult, O. Dulieu, and V. Kokoouline