Experimental superradiance and slow light effects for quantum memories

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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.
RevTeX, 7 pages, 5 figures

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Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/228911

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0904.4621
 http://arxiv.org/abs/0904.4621

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arXiv