Atom Chips Group
We study fundamental many-body quantum physics and its applications, especially in quantum metrology and quantum information. To gain access to new physical situations, we also develop novel technological tools, such as atom chips and fiber Fabry-Pérot microcavities.
Spectral engineering of cavity-protected polaritons in an atomic ensemble
Our paper, which presents the demonstration of spectral engineering of polaritons in a cold atom cavity system, has recently been published in Nature Physics on Mai 2, 2023. You can read the full paper by accessing it here: https://rdcu.be/dbmX7
In this study, we investigate the influence of strong cavity interactions on the protection of polartions against emitter inhomogeneities, hightlighting the role played by dark states in this system. Leveraging the cavity protection effect, we successfully engineer the spectrum of polaritons, resulting in the generation of polartions with muliple frequencies. This can lead to applications in quantum networks, particularly for shaping single-photon emission.
Our collaboration with Olivier Arcizet’s group at Institut Neel has allowed mapping of the microscopic standing-wave field in a fiber Fabry-Perot microcavity with a nanowire probe that is sensitive to the field of a single photon. This work just appeared in Physical Review X on 8 April 2021. The CNRS published a News item about this work (in French).
The atomchips group continues working during these exceptional circumstances, but the office looks a bit different these days. We are grateful we can meet virtually and continue to discuss on our latest results!
News and Events
Deterministic generation of multiparticle entanglement by quantum Zeno dynamics
Spontaneous spin squeezing in a rubidium BEC
Stability of a trapped-atom clock on a chip
Limits of atomic entanglement by cavity feedback: From weak to strong coupling
Postdoc on the strontium project.
An ERC-funded postdoc position is available on our strontium cavity QED project. Please contact Jakob Reichel.
We offer internships for international and French Master students. A Master's project can be followed up with a PhD in our group.
We are always looking for smart and motivated young researchers to join our group.
Check the open positions or contact us for latest openings that may not be on this page yet.
Département de Physique Ecole Normale Supérieure, 24 rue Lhomond, F-75231 Paris Cedex 05
Jakob Reichel 01 44 32 33 79
Romain Long 01 44 32 34 18
Alice Sinatra 01 44 32 25 72
Jean Hare 01 44 32 34 23
Francesco Ferri 01 44 32 25 74
Mengzi Huang 01 44 32 25 74
Konstantin Ott 01 44 32 25 73
Torben Pöpplau 01 44 32 25 73