Julien Laurat et al 2007 New J. Phys. 9 207 doi:10.1088/1367-2630/9/6/207
Towards experimental entanglement connection with atomic ensembles in the single excitation regime
Focus on Measurement-Based Quantum Information ProcessingJulien Laurat, Chin-wen Chou, Hui Deng, Kyung Soo Choi, Daniel Felinto, Hugues de Riedmatten and H J Kimble1
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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.
- PACS
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03.67.Mn Entanglement measures, witnesses, and other characterizations
- Subjects
- Dates
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Issue 6 (June 2007)
Received 8 March 2007
Published 29 June 2007
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Towards experimental entanglement connection with atomic ensembles in the single excitation regime
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