Identifying insulating states of ultra cold atoms with cavity transmission spectrum

Scattering properties of ultra-cold chromium atoms

x

A quantum trampoline for ultra-cold atoms

We have observed the interferometric suspension of a free-falling Bose-Einstein condensate periodically submitted to multiple-order diffraction by a vertical 1D standing wave. The various diffracted matter waves recombine coherently, resulting in high contrast interference in the number of atoms detected at constant height. For long suspension times, multiple-wave interference is revealed throu...

Optical Nonlinear Dynamics with cold atoms in a cavity

This paper presents the nonlinear dynamics of laser cooled and trapped cesium atoms placed inside an optical cavity and interacting with a probe light beam slightly detuned from the 6S1/2F = 4 to 6P3/2F = 5 transition. The system exhibits very strong bistability and instabilities. The origin of the latter is found to be a competition between optical pumping and non-linearities due to saturation...

Engineering Time-Reversal Invariant Topological Insulators With Ultra-Cold Atoms

N. Goldman,1 I. Satija,2, 3 P. Nikolic,2, 3 A. Bermudez,4 M.A. Martin-Delgado,4 M. Lewenstein,5, 6 and I. B. Spielman7 Center for Nonlinear Phenomena and Complex Systems Université Libre de Bruxelles (U.L.B.), Code Postal 231, Campus Plaine, B-1050 Brussels, Belgium 2 Department of Physics, George Mason University, Fairfax, Virginia 22030, USA National Institute of Standards and Technology, Gai...

Effects of Atom-Laser Interaction on Ultra-Cold Atoms