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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 2 — Jan. 24, 2005
  • pp: 660–665

Continuous operation of a one-way quantum key distribution system over installed telecom fibre

Z. L. Yuan and A. J. Shields  »View Author Affiliations

Optics Express, Vol. 13, Issue 2, pp. 660-665 (2005)

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We demonstrate a robust, compact and automated quantum key distribution system, based upon a one-way Mach-Zender interferometer, which is actively compensated for temporal drifts in the photon phase and polarization. The system gives a superior performance to passive compensation schemes with an average quantum bit error rate of 0.87% and a duty cycle of 99.6% for a continuous quantum key distribution session of 19 hours over a 20.3km installed telecom fibre. The results suggest that actively compensated QKD systems are suitable for practical applications.

© 2005 Optical Society of America

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(270.0270) Quantum optics : Quantum optics

ToC Category:
Research Papers

Original Manuscript: November 3, 2004
Revised Manuscript: January 19, 2005
Published: January 24, 2005

Zhiliang Yuan and A. Shields, "Continuous operation of a one-way quantum key distribution system over installed telecom fibre," Opt. Express 13, 660-665 (2005)

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