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Proceedings Paper

Quantum key distribution device with coherent states
Author(s): Jérôme Lodewyck; Matthieu Bloch; Raúl García-Patrón; Simon Fossier; Evgueni Karpov; Eleni Diamanti; Thierry Debuisschert; Nicolas J. Cerf; Rosa Tualle-Brouri; Steven W. McLaughlin; Philippe Grangier
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Paper Abstract

We report on both theoretical and experimental aspects of a fully implemented quantum key distribution device with coherent states. This system features a final key rate of more than 2 kb/s over 25 km of optical fiber. It comprises all required elements for field operation: a compact optical setup, a fast secret bit extraction using efficient LDPC codes, privacy amplification algorithms and a classical channel software. Both hardware and software are operated in real time.

Paper Details

Date Published: 10 September 2007
PDF: 14 pages
Proc. SPIE 6780, Quantum Communications Realized, 67800Z (10 September 2007); doi: 10.1117/12.736855
Show Author Affiliations
Jérôme Lodewyck, LNE-SYRTE, Observatoire de Paris (France)
Matthieu Bloch, Georgia Tech, CNRS (France)
Raúl García-Patrón, Univ. libre de Bruxelles (Belgium)
Simon Fossier, Thales Research and Technologies (France)
l'Institut d'Optique (France)
Evgueni Karpov, Univ. libre de Bruxelles (Belgium)
Eleni Diamanti, l'Institut d'Optique (France)
Thierry Debuisschert, Thales Research and Technologies (France)
Nicolas J. Cerf, Univ. libre de Bruxelles (Belgium)
Rosa Tualle-Brouri, l'Institut d'Optique (France)
Steven W. McLaughlin, GeorgiaTech, CNRS (France)
Philippe Grangier, l'Institut d'Optique (France)


Published in SPIE Proceedings Vol. 6780:
Quantum Communications Realized
Yasuhiko Arakawa; Masahide Sasaki; Hideyuki Sotobayashi, Editor(s)

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