Experimental superradiance and slow light effects for quantum memories

Details Experimental superradiance and slow light effects for quantum memories Experimental superradiance and slow light effects for quantum memories

2009-04-29

arxiv.org/abs/0904.4621v1

Physics

Quantum Physics

RevTeX, 7 pages, 5 figures

Scientific paper

The effects of high optical depth phenomena, such as superradiance, are investigated in potential quantum memory materials. The results may have relevance for several schemes, including CRIB, AFC and EIT-based quantum memories, which are based on using ensembles as storage media. It is shown that strong superradiant effects, manifested as decay rates larger than 1/T2*, are present even for moderate values of alphaL < 5, and increases as a function of alphaL. For even higher alphaL, effects like off-resonant slow light is demonstrated and discussed, and finally, the efficiency of time-reversed optimized input pulses are tested. A maximum retrieval efficiency of ~20% is reached, and agreement with the theoretically expected result is discussed.

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