Holographic storage of multiple coherence gratings in a Bose-Einstein condensate

Abstract

We demonstrate superradiant conversion between a two-mode collective atomic state and a single-mode light field in an elongated cloud of Bose-condensed atoms. Two off-resonant write beams induce superradiant Raman scattering, producing two independent coherence gratings with a different wave vector in the cloud. By applying phase-matched read beams after a controllable delay, the gratings can be selectively converted into the light field also in a superradiant way. Due to the large cooperativity parameter and the small velocity width of the condensate, a high conversion efficiency of $>70$ % and a long storage time of $>120$ $\mu$s were achieved.

arXiv comment5 pages, 4 figures

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Cited by in corpus (4)

• Imprinting Light Phase on Matter Wave Gratings in Superradiance Scattering
• Raman scattering of atoms from a quasi-condensate in a perturbative regime
• Storage of polarization-encoded cluster states in an atomic system
• Asymmetric superradiant scattering and abnormal mode amplification induced by atomic density distortion