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Towards experimental entanglement connection with atomic ensembles in the single excitation regime

Laurat, Julien and Chou, Chin-Wen and Deng, Hui and Choi, Kyung Soo and Felinto, Daniel and de Riedmatten, Hugues and Kimble, H. J. (2007) Towards experimental entanglement connection with atomic ensembles in the single excitation regime. New Journal of Physics, 9 (6). Art. No. 207. ISSN 1367-2630. doi:10.1088/1367-2630/9/6/207.

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We present a protocol for performing entanglement connection between pairs of atomic ensembles in the single excitation regime. Two pairs are prepared in an asynchronous fashion and then connected via a Bell measurement. The resulting state of the two remaining ensembles is mapped to photonic modes and a reduced density matrix is then reconstructed. Our observations confirm for the first time the creation of coherence between atomic systems that never interacted, a first step towards entanglement connection, a critical requirement for quantum networking and long distance quantum communications.

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Additional Information:© 2007 Deutsche Physikalische Gesellschaft & Institute of Physics. Received 8 March 2007; Published 29 June 2007. We gratefully acknowledge our ongoing collaboration with S J van Enk. This research is supported by the Disruptive Technologies Office (DTO) and by the National Science Foundation (NSF). JL acknowledges financial support from the European Union (Marie Curie fellowship). HD acknowledges support as Fellow of the Center for the Physics of Information at Caltech. Special Issue: Focus on Measurement-Based Quantum Information Processing
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Department of National IntelligenceUNSPECIFIED
Marie Curie FellowshipUNSPECIFIED
Caltech Center for the Physics of InformationUNSPECIFIED
Issue or Number:6
Record Number:CaltechAUTHORS:LAUnjp07
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Official Citation:Julien Laurat et al 2007 New J. Phys. 9 207
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:8073
Deposited By: Archive Administrator
Deposited On:23 Jul 2007
Last Modified:12 Jul 2022 19:45

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