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Quantum Cryptography Security

Quantum key distribution over 25 km with an all-fiber continuous-variable system

arXiv
Authors: Jerome Lodewyck, Matthieu Bloch, Raul Garcia-Patron, Simon Fossier, Evgueni Karpov, Eleni Diamanti, Thierry Debuisschert, Nicolas J. Cerf, Rosa Tualle-Brouri, Steven W. McLaughlin, Philippe Grangier

Year

2007

Paper ID

49822

Status

Preprint

Abstract Read

~2 min

Abstract Words

81

Citations

N/A

Abstract

We report on the implementation of a reverse-reconciliated coherent-state continuous-variable quantum key distribution system, with which we generated secret keys at a rate of more than 2 kb/s over 25 km of optical fiber. Time multiplexing is used to transmit both the signal and phase reference in the same optical fiber. Our system includes all experimental aspects required for a field implementation of a quantum key distribution setup. Real-time reverse reconciliation is achieved by using fast and efficient LDPC error correcting codes.

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  • We report on the implementation of a reverse-reconciliated coherent-state continuous-variable quantum key distribution system, with which we generated secret keys at a rate of...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:0706.4255 [2] arXiv https://arxiv.org/abs/0706.4255 [3] Publisher https://arxiv.org/abs/0706.4255

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