Temporally multiplexed storage of images in a Gradient Echo Memory

Abstract

We study the storage and retrieval of images in a hot atomic vapor using the gradient echo memory protocol. We demonstrate that this technique allows for the storage of multiple spatial modes. We study both spatial and temporal multiplexing by storing a sequence of two different images in the atomic vapor. The effect of atomic diffusion on the spatial resolution is discussed and characterized experimentally. For short storage time a normalized cross-correlation between a retrieved image and its input of 88 % is reported.

9 pages, to be published in Optics Express

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• Experimental characterization of Gaussian quantum discord generated by four-wave mixing
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• Proposal for room-temperature quantum repeaters with nitrogen-vacancy centers and optomechanics
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• Magnetically tuned, robust and efficient filtering system for spatially multimode quantum memory in warm atomic vapors
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