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Temporal Dynamics of Photon Pairs Generated by an Atomic Ensemble

Polyakov, S. V. and Chou, C. W. and Felinto, D. and Kimble, H. J. (2004) Temporal Dynamics of Photon Pairs Generated by an Atomic Ensemble. Physical Review Letters, 93 (26). Art. No. 263601. ISSN 0031-9007.

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The time dependence of nonclassical correlations is investigated for two fields (1,2) generated by an ensemble of cold cesium atoms via the protocol of Duan et al. [Nature (London) 414, 413 (2001)]. The correlation function R(t1,t2) for the ratio of cross to autocorrelations for the (1,2) fields at times (t1,t2) is found to have a maximum value Rmax = 292±57, which significantly violates the Cauchy-Schwarz inequality R<=1 for classical fields. Decoherence of quantum correlations is observed over taud~=175 ns, and is described by our model, as is a new scheme to mitigate this effect.

Item Type:Article
Additional Information:©2004 The American Physical Society (Received 4 June 2004; published 20 December 2004) This work is supported by ARDA, the Caltech MURI Center for Quantum Networks, and the NSF; D.F. is supported by CNPQ (Brazilian Agency).
Subject Keywords:quantum optics; caesium; correlation theory
Record Number:CaltechAUTHORS:POLprl04
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2091
Deposited By: Archive Administrator
Deposited On:07 Mar 2006
Last Modified:18 Sep 2014 18:11

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