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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 8 — Apr. 13, 2009
  • pp: 6275–6282

1.5 GHz single-photon detection at telecommunication wavelengths using sinusoidally gated InGaAs/InP avalanche photodiode

Naoto Namekata, Shunsuke Adachi, and Shuichiro Inoue  »View Author Affiliations

Optics Express, Vol. 17, Issue 8, pp. 6275-6282 (2009)

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We report a telecom-band single-photon detector for gigahertz clocked quantum key distribution systems. The single-photon detector is based on a sinusoidally gated InGaAs/InP avalanche photodiode. The gate repetition frequency of the single-photon detector reached 1.5 GHz. A quantum efficiency of 10.8 % at 1550 nm was obtained with a dark count probability per gate of 6.3×10-7 and an afterpulsing probability of 2.8 %. Moreover, the maximum detection rate of the detector is 20 MHz.

© 2009 Optical Society of America

OCIS Codes
(030.5260) Coherence and statistical optics : Photon counting
(040.0040) Detectors : Detectors
(270.0270) Quantum optics : Quantum optics

ToC Category:
Quantum Optics

Original Manuscript: November 6, 2008
Revised Manuscript: December 28, 2008
Manuscript Accepted: January 16, 2009
Published: April 2, 2009

Naoto Namekata, Shunsuke Adachi, and Shuichiro Inoue, "1.5 GHz single-photon detection at telecommunication wavelengths using sinusoidally gated InGaAs/InP avalanche photodiode," Opt. Express 17, 6275-6282 (2009)

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