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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 19 — Oct. 1, 2008
  • pp: 2257–2259

Time-resolved single-photon detection by femtosecond upconversion

Onur Kuzucu, Franco N.C. Wong, Sunao Kurimura, and Sergey Tovstonog  »View Author Affiliations


Optics Letters, Vol. 33, Issue 19, pp. 2257-2259 (2008)
http://dx.doi.org/10.1364/OL.33.002257


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Abstract

We demonstrate a time-resolved single-photon detection technique based on ultrafast sum-frequency generation, providing femtosecond measurement capability for single photons in photonic quantum information processing. Noncollinear broadband upconversion in periodically poled MgO-doped stoichiometric lithium tantalate with an ultrafast pump and detection with a Si single-photon counter enable efficient detection of IR photons and temporal resolution of 150 fs . We utilize the timing resolution to map the generation efficiency profile along the propagation axis of a periodically poled K Ti O P O 4 crystal, revealing its local grating quality with millimeter resolution. We also apply the technique to two-photon coincidence measurements and directly demonstrate time anticorrelation between coincident-frequency entangled photons that are parametrically generated under extended phase-matching conditions.

© 2008 Optical Society of America

OCIS Codes
(190.7220) Nonlinear optics : Upconversion
(270.5290) Quantum optics : Photon statistics
(270.5570) Quantum optics : Quantum detectors
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Quantum Optics

History
Original Manuscript: June 26, 2008
Revised Manuscript: August 12, 2008
Manuscript Accepted: August 29, 2008
Published: September 30, 2008

Citation
Onur Kuzucu, Franco N. C. Wong, Sunao Kurimura, and Sergey Tovstonog, "Time-resolved single-photon detection by femtosecond upconversion," Opt. Lett. 33, 2257-2259 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-19-2257


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