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Optics Letters

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  • Vol. 30, Iss. 13 — Jul. 1, 2005
  • pp: 1725–1727

Highly efficient single-photon detection at communication wavelengths by use of upconversion in reverse-proton-exchanged periodically poled LiNbO3 waveguides

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


Optics Letters, Vol. 30, Issue 13, pp. 1725-1727 (2005)
http://dx.doi.org/10.1364/OL.30.001725


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Abstract

Conventional single-photon detectors at communication wavelengths suffer from low quantum efficiencies and large dark counts. We present a single-photon detection system, operating at communication wavelengths, based on guided-wave frequency upconversion in a nonlinear crystal with an overall system detection efficiency (upconversion + detection) exceeding 46% at 1.56 µm. This system consists of a fiber-pigtailed reverse-proton-exchanged periodically poled LiNbO3 waveguide device in conjunction with a silicon-based single-photon counting module.

© 2005 Optical Society of America

OCIS Codes
(040.5570) Detectors : Quantum detectors
(190.7220) Nonlinear optics : Upconversion

Citation
Carsten Langrock, Eleni Diamanti, Rostislav V. Roussev, Yoshihisa Yamamoto, M. M. Fejer, and Hiroki Takesue, "Highly efficient single-photon detection at communication wavelengths by use of upconversion in reverse-proton-exchanged periodically poled LiNbO3 waveguides," Opt. Lett. 30, 1725-1727 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-13-1725


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