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

N Piovella, V Beretta, G R M Robb, R Bonifacio

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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.

Original languageEnglish
Article number021801
Pages (from-to)-
Number of pages4
JournalPhysical Review A
Issue number2
Publication statusPublished - Aug 2003


  • phase-coherent amplification
  • collective atomic recoil
  • matter waves
  • laser

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