We investigate the intensity stability of a superradiant laser in the configuration where a continuous beam of atoms in an electronically excited state crosses the mode of a high-finesse Fabry-Perot cavity. We show that such superradiant laser can become unstable and develop chaotic behavior.
arXiv:2606.21675 (2026)
After a long design period, we have just started the construction of the main vacuum chamber for version 2.0 of the chromium BEC experiment. The assembly is powered by our new post-doc Fatima and our summer intern Esther. Let's hope there is no leak!
We demonstrate coherent manipulation of the nuclear degrees of freedom of ultracold ground-state strontium-87 atoms, thus providing a toolkit for fully exploiting the corresponding large Hilbert space as a quantum resource and for quantum simulation experiments with 𝔰u(𝑁)-symmetric matter.
arXiv:2501.01731 (2025) / PRX Quantum 6, 020352 (2025)
We propose a minimalistic model to account for the main properties of a continuous superradiant laser, in which a beam of atoms crosses the mode of a high-finesse Fabry-Perot cavity, and collectively emits light into the cavity mode.
arXiv:2210.05464 (2022) / SciPost Phys. Core 6, 015 (2023)
Welcome to Benjamin Pasquiou, new permanent member of the group!
Benjamin Pasquiou (PhD thesis in 2011) receives the Michelin price from the French Physical Society
French version: Effets de l’interaction dipôle-dipôlesur les propriétés magnétiques d’un condensat de chrome Notre équipe a obtenu en 2007 un condensat de Bose Einstein de chrome 52Cr, élément possédant un fort moment magnétique dans son état fondamental ( µ =…
Effects of dipole-dipole interaction on magnetic properties of a chromium condensate
We study thermodynamic properties of a gas of spin 3 52Cr atoms across Bose-Einstein condensation. Magnetization is free, due to dipole-dipole interactions.
arXiv:1110.0786 (2011) / Phys. Rev. Lett. 108, 045307 (2012)
Effects of dipolar relaxation in chromium BECs
