Superradiant light scattering from a moving Bose-Einstein condensate

Year: 2004

Authors: Bonifacio R., Cataliotti F.S., Cola M., Fallani L., Fort C., Piovella N., Inguscio M.

Autors Affiliation: FM, I-50019 Sesto Fiorentino, FI, Italy; European Lab Nonlinear Spect, I-50019 Sesto Fiorentino, FI, Italy; Univ Milan, Dipartimento Fis, I-20133 Milan, Italy; Univ Catania, Dipartmento Fis, I-95124 Catania, Italy; Univ Florence, Dipartimento Fis, I-50121 Florence, Italy.

Abstract: 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 setf-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.

Journal/Review: OPTICS COMMUNICATIONS

Volume: 233 (1-3)      Pages from: 155  to: 160

More Information: This work has been supported by the EU, INFM and MIUR. We thank B. Englert and S. Olivares for useful discussions.
KeyWords: collective atomic recoil; superradiance
DOI: 10.1016/j.optcom.2004.01.027

Citations: 27
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