Short presentation

Wave propagation in diffusive media is an important subject for numerous fields (medical imaging, acoustics, seismology, stellar physics, …). The experiments that we pursue make use of an original medium: a laser-cooled atomic cloud. The peculiar properties of this diffusive medium (strong resonances, strong nonlinearity, quantum internal structure of the scatterers, mechanical effects of light on the atoms, quantum effects…) give rise to a very rich physics. We study several subjects in this context. 
More generally, we are interested in collective effects in light-atom interaction, which include multiple scattering of light, but also nonlinear optics or cooperative scattering, in cold or hot vapors.
We have been also involved in a fruitful collaboration with astrophysicists on revival of intensity interferometry (Hanbury Brown and Twiss technique). 
Our work is mainly experimental, using four cold-atom apparatus and several smaller hot-vapor setups, but also theoretical, in particular through many collaborations.

Please look at our Research page to know more.

News & events

8 Oct. 2021: Welcome to Nahum Calderón Chávez!

Nahum is starting a post-doc in our team. He's going to work on theoretical and numerical aspects of the ANDLICA project. Before that he did his PhD in Puebla (Mexico) and a first post-doc in Bescia (Italy).

29 Sept. 2021: Pierre Azam successfully defended his PhD thesis!

Pierre's work on "Quantum fluids of light in hot atomic vapors" has been greatly appreciated by the committee. Pierre will remain in our group for some more time on an engineering project to make his experiment more compact, robust and automated, in view of future applications.

Sept. 2021: Open post-doc and PhD positions

We have open positions for two post-doc positions and one PhD position, see the annoncement.

Sept. 2021: CoScaLi workshop at Porquerolles

Mathilde and Robin, with Romain Bachelard, have organized the 2021 workshop on Collective Scattering of Light (CoScaLi) on the beautiful island of Porquerolles. This hybrid event (both on-line and in-person) has been a success!

Sept. 2021: Our web page is back!

After several months of interruption and a lot of data loss (due to the fire of the data center), our cold-atom web page is finally back and can be updated again. But this is still a work in progress...