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Heralded Entanglement between Atomic Ensembles: Preparation, Decoherence, and Scaling

Laurat, J. and Choi, K. S. and Deng, H. and Chou, C. W. and Kimble, H. J. (2007) Heralded Entanglement between Atomic Ensembles: Preparation, Decoherence, and Scaling. Physical Review Letters, 99 (18). Art. No. 180504. ISSN 0031-9007.

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Heralded entanglement between collective excitations in two atomic ensembles is probabilistically generated, stored, and converted to single-photon fields. By way of the concurrence, quantitative characterizations are reported for the scaling behavior of entanglement with excitation probability and for the temporal dynamics of various correlations resulting in the decay of entanglement. A lower bound of the concurrence for the collective atomic state of 0.9±0.3 is inferred. The decay of entanglement as a function of storage time is also observed, and related to the local dynamics.

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Additional Information:©2007 The American Physical Society. (Received 26 May 2007; published 2 November 2007) We acknowledge our collaboration with S.J. van Enk and discussions with D. Felinto and H. de Riedmatten. This research is supported by the DTO and by the NSF. J.L. acknowledges financial support from the EU (Marie Curie fellowship) and H.D. from the CPI at Caltech.
Funding AgencyGrant Number
Department of National IntelligenceUNSPECIFIED
Marie Curie FellowshipUNSPECIFIED
Caltech Center for the Physics of InformationUNSPECIFIED
Issue or Number:18
Classification Code:PACS numbers: 42.50.Dv, 03.67.Mn, 03.67.Hk, 03.65.Yz
Record Number:CaltechAUTHORS:LAUprl07
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9146
Deposited By: Archive Administrator
Deposited On:04 Nov 2007
Last Modified:27 Oct 2020 19:13

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