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.

Superradiant light scattering from a moving Bose-Einstein condensate / R. Bonifacio, F.S. Cataliotti, M. Cola, L. Fallani, C. Fort, N. Piovella, M. Inguscio. - In: OPTICS COMMUNICATIONS. - ISSN 0030-4018. - 233:1-3(2004), pp. 155-160.

Superradiant light scattering from a moving Bose-Einstein condensate

R. Bonifacio;M. Cola;N. Piovella;
2004

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 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.
Collective atomic recoil; Superradiance
Settore FIS/03 - Fisica della Materia
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/752005
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