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Fast entanglement distribution with atomic ensembles and fluorescent detection

Brask, J. B. and Jiang, L. and Gorshkov, A. V. and Vuletic, V. and Sørensen, A. S. and Lukin, M. D. (2010) Fast entanglement distribution with atomic ensembles and fluorescent detection. Physical Review A, 81 (2). 020303. ISSN 1050-2947.

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Quantum repeaters based on atomic ensemble quantum memories are promising candidates for achieving scalable distribution of entanglement over long distances. Recently, important experimental progress has been made toward their implementation. However, the entanglement rates and scalability of current approaches are limited by relatively low retrieval and single-photon detector efficiencies. We propose a scheme which makes use of fluorescent detection of stored excitations to significantly increase the efficiency of connection and hence the rate. Practical performance and possible experimental realizations of the new protocol are discussed.

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Additional Information:© 2010 The American Physical Society. Received 22 July 2009; published 12 February 2010. We acknowledge helpful discussions with I. Cirac, E. Polzik, M. Bajcsy, and S. Hofferberth. This work was supported by NSF, CUA, DARPA, the EU FET-Open project COMPAS (212008), and the Danish National Research Foundation.
Funding AgencyGrant Number
Center for Ultracold Atoms (CUA)UNSPECIFIED
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
European Union (EU)212008
Danish National Research Foundation UNSPECIFIED
Classification Code:PACS number(s): 03.67.Hk, 03.67.Bg, 42.50.−p
Record Number:CaltechAUTHORS:20100331-094704038
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:17826
Deposited By: Tony Diaz
Deposited On:07 Apr 2010 17:44
Last Modified:26 Dec 2012 11:55

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