## Simple quantum key distribution scheme with excellent long-term stability |

JOSA B, Vol. 30, Issue 9, pp. 2560-2562 (2013)

http://dx.doi.org/10.1364/JOSAB.30.002560

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### Abstract

A simple plug-and-play quantum key distribution scheme based on the Sagnac interferometer and Faraday mirrors is described. There are relatively few components, and fiber birefringence effects are automatically compensated for, allowing extremely stable operation. Visibility better than 95% over 50 km of fiber at 1.31 μm is obtained, maintainable under ordinary lab conditions for several hours without the need of any feedback control or adjustments.

© 2013 Optical Society of America

**OCIS Codes**

(270.5565) Quantum optics : Quantum communications

(270.5568) Quantum optics : Quantum cryptography

(270.5585) Quantum optics : Quantum information and processing

**ToC Category:**

Quantum Optics

**History**

Original Manuscript: March 28, 2013

Revised Manuscript: July 17, 2013

Manuscript Accepted: August 8, 2013

Published: August 30, 2013

**Citation**

Hai-Qiang Ma, Ke-Jin Wei, and Jian-Hui Yang, "Simple quantum key distribution scheme with excellent long-term stability," J. Opt. Soc. Am. B **30**, 2560-2562 (2013)

http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-9-2560

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