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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 7 — Apr. 1, 2008
  • pp: 639–641

Optics InfoBase > Optics Letters > Volume 33 > Issue 7 > Page 639

Efficient and low-noise single-photon detection in 1550 nm communication band by frequency upconversion in periodically poled LiNbO3 waveguides

H. Kamada, M. Asobe, T. Honjo, H. Takesue, Y. Tokura, Y. Nishida, O. Tadanaga, and H. Miyazawa  »View Author Affiliations


Optics Letters, Vol. 33, Issue 7, pp. 639-641 (2008)
http://dx.doi.org/10.1364/OL.33.000639


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Abstract

We demonstrate 1500 nm band single-photon detection with low dark-count noise and a potentially high efficiency, which may allow long distance and high-bit-rate quantum key distribution. By developing frequency upconversion devices based on periodically poled lithium niobate waveguides, which are specifically designed to use a pump wavelength longer than that of communication-band photons, we completely eliminate the dark-count noise caused by parasitic nonlinear processes in the waveguide. We observed an internal conversion efficiency as high as 40% and demonstrated scaling down to the single photon level while maintaining a background dark-count rate of 10 2 s āˆ’ 1 .

© 2008 Optical Society of America

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

ToC Category:
Nonlinear Optics

History
Original Manuscript: December 17, 2007
Revised Manuscript: February 5, 2008
Manuscript Accepted: February 13, 2008
Published: March 18, 2008

Citation
H. Kamada, M. Asobe, T. Honjo, H. Takesue, Y. Tokura, Y. Nishida, O. Tadanaga, and H. Miyazawa, "Efficient and low-noise single-photon detection in 1550 nm communication band by frequency upconversion in periodically poled LiNbO3 waveguides," Opt. Lett. 33, 639-641 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-7-639

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