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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 20 — Oct. 2, 2006
  • pp: 9522–9530

10-GHz clock differential phase shift quantum key distribution experiment

Hiroki Takesue, Eleni Diamanti, Carsten Langrock, M. M. Fejer, and Yoshihisa Yamamoto  »View Author Affiliations


Optics Express, Vol. 14, Issue 20, pp. 9522-9530 (2006)
http://dx.doi.org/10.1364/OE.14.009522


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Abstract

This paper reports the first quantum key distribution experiment implemented with a 10-GHz clock frequency. We used a 10-GHz actively mode-locked fiber laser as a source of short coherent pulses and single photon detectors based on frequency up-conversion in periodically poled lithium niobate waveguides. The use of short pulses and low-jitter upconversion detectors significantly reduced the bit errors caused by detector dark counts even after long-distance transmission of a weak coherent state pulse. We employed the differential phase shift quantum key distribution protocol, and generated sifted keys at a rate of 3.7 kbit/s over a 105 km fiber with a bit error rate of 9.7%.

© 2006 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(270.0270) Quantum optics : Quantum optics

ToC Category:
Quantum Optics

History
Original Manuscript: July 26, 2006
Revised Manuscript: September 12, 2006
Manuscript Accepted: September 13, 2006
Published: October 2, 2006

Citation
Hiroki Takesue, Eleni Diamanti, Carsten Langrock, M. M. Fejer, and Yoshihisa Yamamoto, "10-GHz clock differential phase shift quantum key distribution experiment," Opt. Express 14, 9522-9530 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-20-9522


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References

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