Tom Bienaimé

TL;DR: This work explores transverse condensation for an atomic gas confined in a novel trapping geometry, with a flat in-plane bottom, and relates it to the onset of an extended (yet of finite-range) in- plane coherence, and observes topological defects with a mean number satisfying the universal scaling law predicted by Kibble-Zurek mechanism.

TL;DR: This work creates supercurrents in annular two-dimensional Bose gases through a temperature quench of the normal-to-superfluid phase transition and measures their distribution for different quench times to demonstrate the stochastic nature of the super currents.

TL;DR: It is shown that a dilute cloud of cold atoms is an ideal system to look for subradiant states in free space and study various mechanisms to control this subradiance.

TL;DR: This Letter proposes and implements a general method for measuring the excitations spectrum in a fluid of light, based on a group velocity measurement and observes a Bogoliubov-like dispersion with a speed of sound scaling as the square root of the fluid density.

TL;DR: It is shown that static and oscillating photon bubbles can be excited by diffused light in the laser cooled matter confined in a magneto-optical trap, and it can provide a source for low frequency turbulence.