18 datasets found

International audience

International audience

This thesis focuses on the manipulation of rubidium 87 atoms in a microscopic optical dipole trap. The experiments are performed in various regimes where the number of...

This thesis manuscript presents experimental results on Bose-Einstein condensates in optical lattices and in the regime of fast rotation. In an optical lattice an...

International audience

Any state of matter is classified according to its order, and the kind of order a physical system can posses is profoundly affected by its dimensionality. Conventional...

25 pages, 5 figures ; contribution to the Springer&Verlag book "Quantum Fluids: hot-topics and new trends", edited by A. Bramati and M. Modugno

International audience

Along this thesis manuscript I shall present some emergent nonlinear phenomena in spinor exciton polariton condensates. After an introductory chapter bringing the...

This thesis presents a theoretical study of coherent transport phenomena in unidimensional Bose-Einstein condensates in presence of disorder. We devoted a particular...

In the vicinity of Bose-Einstein condensation, the collisional properties of a dilute gas of metastable helium He∗ in the state 23 S1 are governed by the rate of...

two minor corrections, two refs added.

International audience

In my thesis I will discuss some aspects of collective dynamics of excitons and exciton-polaritons in nanoscale heterostructures. In the first Chapter I will make a...

We directly model the quantum many particle dynamics during the transition of a gas of N indistinguishable bosons into a Bose-Einstein condensate. To this end, we...

4 pages

We have studied the atomic density of a cloud confined in an isotropic harmonic trap at the vicinity of the Bose-Einstein transition temperature. We show that, for a...

v3: Minor modifications of v2. v2: Major modifications: the former version (v1) has been completely rewritten. New results concerning the anisotropic traps and generalized...