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Functional Quantum Nodes for Entanglement Distribution over Scalable Quantum Networks

Chou, Chin-Wen and Laurat, Julien and Deng, Hui and Choi, Kyung Soo and de Riedmatten, Hugues and Felinto, Daniel and Kimble, H. Jeff (2007) Functional Quantum Nodes for Entanglement Distribution over Scalable Quantum Networks. Science, 316 (5829). pp. 1316-1320. ISSN 0036-8075. doi:10.1126/science.1140300.

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We demonstrated entanglement distribution between two remote quantum nodes located 3 meters apart. This distribution involves the asynchronous preparation of two pairs of atomic memories and the coherent mapping of stored atomic states into light fields in an effective state of near-maximum polarization entanglement. Entanglement is verified by way of the measured violation of a Bell inequality, and it can be used for communication protocols such as quantum cryptography. The demonstrated quantum nodes and channels can be used as segments of a quantum repeater, providing an essential tool for robust long-distance quantum communication.

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Additional Information:© 2007 American Association for the Advancement of Science. Received 23 January 2007; accepted 27 March 2007; Published online 5 April 2007. We gratefully acknowledge critical discussions with S. J. van Enk. This research is supported by the Disruptive Technologies Office and by the NSF. J.L. acknowledges financial support from the European Union (Marie Curie fellowship). H.D. acknowledges support as Fellow of the Center for the Physics of Information at the California Institute of Technology.
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Marie Curie FellowshipUNSPECIFIED
Caltech Center for the Physics of InformationUNSPECIFIED
Issue or Number:5829
Record Number:CaltechAUTHORS:20141118-075249737
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51879
Deposited By: Tony Diaz
Deposited On:18 Nov 2014 17:01
Last Modified:10 Nov 2021 19:17

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