Superradiant light scattering from a moving Bose-Einstein condensate

Details Superradiant light scattering from a moving Bose-Einstein condensate Superradiant light scattering from a moving Bose-Einstein condensate

2003-06-19

arxiv.org/abs/cond-mat/0306500v2

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1016/j.optcom.2004.01.027

We investigate the interaction of a moving BEC with a far detuned laser beam. Superradiant Rayleigh scattering arises from the spontaneous formation of a matter-wave grating due to the interference of two wavepackets with different momenta. The system is described by the CARL-BEC model which is a generalization of the Gross-Pitaevskii model to include the self-consistent evolution of the scattered field. The experiment gives evidence of a damping of the matter-wave grating which depends on the initial velocity of the condensate. We describe this damping in terms of a phase-diffusion decoherence process, in good agreement with the experimental results.

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