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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 26, Iss. 17 — Sep. 1, 2001
  • pp: 1367–1369

Generation of correlated photons in controlled spatial modes by downconversion in nonlinear waveguides

Konrad Banaszek, Alfred B. U’Ren, and Ian A. Walmsley  »View Author Affiliations


Optics Letters, Vol. 26, Issue 17, pp. 1367-1369 (2001)
http://dx.doi.org/10.1364/OL.26.001367


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Abstract

We report the observation of correlated photon pairs generated by spontaneous parametric downconversion of a 400-nm pump pulse in a quasi-phase-matched KTiOPO4 nonlinear waveguide. The highest ratio of coincidence to single-photon count rates observed near 800 nm exceeds 18%. This suggests that nonlinear waveguides will be a promising source of correlated photons for metrology and quantum information processing applications. We also discuss possibilities of controlling the spatial characteristics of the downconverted photons produced in multimode waveguide structures.

© 2001 Optical Society of America

OCIS Codes
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(270.5290) Quantum optics : Photon statistics

Citation
Konrad Banaszek, Alfred B. U’Ren, and Ian A. Walmsley, "Generation of correlated photons in controlled spatial modes by downconversion in nonlinear waveguides," Opt. Lett. 26, 1367-1369 (2001)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-26-17-1367

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