Superradiant Rayleigh Scattering from a Bose-Einstein Condensate

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Science  23 Jul 1999:
Vol. 285, Issue 5427, pp. 571-574
DOI: 10.1126/science.285.5427.571

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Rayleigh scattering off a Bose-Einstein condensate was studied. Exposing an elongated condensate to a single off-resonant laser beam resulted in the observation of highly directional scattering of light and atoms. This collective light scattering is caused by the coherent center-of-mass motion of the atoms in the condensate. A directional beam of recoiling atoms was built up by matter wave amplification.

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