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Laser driving of Superradiant scattering at variable incidence angle

By Bo Lu, Xiaoji Zhou, Thibault Vogt, Zhen Fang and Xuzong Chen


We study superradiant scattering from a Bose-Einstein condensate using a pump laser incident at variable angle and show the presence of asymmetrically populated scattering modes. Experimental data reveal that the direction of the pump laser plays a significant role in the formation of this asymmetry, result which is in good agreement with numerical simulations based on coupled Maxwell-Schr\"{o}dinger equations. Our study complements the gap of previous work in which the pump laser was only applied along the short axis or the long axis of a condensate, and extends our knowledge about cooperative scattering processes.Comment: 5 pages, 5 figures, Accepted by Phys. Rev.

Topics: Condensed Matter - Quantum Gases, Physics - Atomic Physics
Year: 2011
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