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

被引：475

作者：

Lodewyck, Jerome ^{[1
,2
]}

Bloch, Matthieu ^{[3
]}

Garcia-Patron, Raul ^{[4
]}

Fossier, Simon ^{[1
,2
]}

Karpov, Evgueni ^{[4
]}

Diamanti, Eleni ^{[2
]}

Debuisschert, Thierry ^{[1
]}

Cerf, Nicolas J. ^{[4
]}

Tualle-Brouri, Rosa ^{[2
]}

McLaughlin, Steven W. ^{[3
]}

Grangier, Philippe ^{[2
]}

机构：

[1] Thales Res & Technol, F-91767 Palaiseau, France

[2] Univ Paris Sud, CNRS, Lab Charles Fabry Inst Opt, F-91127 Palaiseau, France

[3] CNRS, GeorgiaTech, UMI 2958, F-57070 Metz, France

[4] Univ Libre Bruxelles, Ctr Quantum Informat & Commun Ecole Polytech, B-1050 Brussels, Belgium

来源：

PHYSICAL REVIEW A | 2007年 / 76卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.76.042305

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 low-density parity check error correcting codes.

引用

页数：10

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