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Photon echo in the super-radiant light scattering from a Bose-Einstein condensate

Piovella, N and Beretta, V and Robb, G R M and Bonifacio, R (2003) Photon echo in the super-radiant light scattering from a Bose-Einstein condensate. Physical Review A, 68 (2). -. ISSN 1094-1622

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Abstract

Super-radiant Rayleigh scattering from a Bose-Einstein condensate, driven by a single far-detuned laser beam, is strongly limited by dephasing due to inhomogeneous broadening. We demonstrate that the dephasing can be reversed applying a Bragg pulse of area pi after the first superradiant scattering, stimulating a superradiant echo and inducing a further transfer of atoms from the initial condensate to a condensate with relative momentum 2hk in the direction of the laser.