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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. 
We have also studied dynamics of matter waves with a Bose-Einstein condensation experiment. 
Finally, we have been involved in a fruitful collaboration with astrophysicists on the measurement of light correlations (Hanbury Brown and Twiss technique). 
Our work is mainly experimental, using three cold-atom apparatus and several smaller hot-vapor setups, but also theoretical, in particular through many collaborations.

News & events

Oct. 2020: Open post-doc position

We have an opening for a two-years post-doc position on intensity correlations to probe quantum correlations in a cold atomic cloud, see the annoncement.

Oct. 2020: Welcome to the new members of the team!

We have an opening for a two-years post-doc position on intensity correlations to probe quantum correlations in a cold atomic cloud, see the annoncement.

Sept. 2020: Collaborative ANR grant awarded - PI: William Guerin

The I2C project (Intensity Interferometry at Calern) is a collaborative project involving three teams from the Nice area: our team at INPHYNI (William Guerin, Mathilde Hugbart, Guillaume Labeyrie and Robin Kaiser), astrophysicists/astronomers from the Lagrange Laboratory (Olivier Lai, Jean-Pierre Rivet, Armando Dominiciano de Souza, and Farrokh Vakili), and time-metrology experts of the Géoazur Laboratory (Julien Chabé, Clément Courde, and Nicolas Maurice). Our partners operate the C2PU and MéO telescopes from Observatoire de la Côte d'Azur (on the Calern Plateau). The goal is to revive the technique of intensity interferometry with modern technologies and use it for measurements of astrophysical interest.

June 2020: William Guerin passed his habilitation, congratulation to him!

The manuscript is entitled "Mirrorless lasing and cooperative scattering with cold atoms".

June 2020: The physics price of the national academy of Luxembourg awarded to Robin Kaiser

Robin has been awarded the "Grand Prix 2020 en sciences physiques de l'Institut Grand-Ducal / Prix Paul Wurth", see the press release here. Congratulations to him! A ceremony should take place in November (if not canceled by the Covid-19 crisis).

May 2020: Book by Anders Kastberg

Anders has published a book on the Structure of multielectron atoms (Springer).

INPHYNI_Gen_Livre_Katsberg
INPHYNI_Gen_Livre_Katsberg