Reducing noise in single-photon-level frequency conversion

We demonstrate low-noise and efficient frequency conversion by sum-frequency mixing in a periodically poled LiNbO(3) (PPLN) waveguide. Using a 1556 nm pump, 1302 nm photons are efficiently converted to 709 nm photons. We obtain 70% conversion efficiency in the PPLN waveguide and >50% external con...

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Bibliographic Details
Published inOptics letters Vol. 38; no. 8; p. 1310
Main Authors Kuo, Paulina S, Pelc, Jason S, Slattery, Oliver, Kim, Yong-Su, Fejer, M M, Tang, Xiao
Format Journal Article
LanguageEnglish
Published United States 15.04.2013
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Summary:We demonstrate low-noise and efficient frequency conversion by sum-frequency mixing in a periodically poled LiNbO(3) (PPLN) waveguide. Using a 1556 nm pump, 1302 nm photons are efficiently converted to 709 nm photons. We obtain 70% conversion efficiency in the PPLN waveguide and >50% external conversion efficiency with 600 noise counts per second at peak conversion with continuous-wave pumping. We simultaneously achieve low noise and high conversion efficiency by careful spectral filtering. We discuss the impact of low-noise frequency translation on single-photon upconversion detection and quantum information applications.
ISSN:1539-4794
DOI:10.1364/OL.38.001310