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Efficient, low-noise, single-photon frequency conversion

Paulina S. Kuo, Jason S. Pelc, Oliver Slattery, Yong‐Su Kim, M. M. Fejer, Xiao Hong Tang

Published Jan 1, 2013• 1 citation
Publisher

Abstract

We demonstrate simultaneous low-noise and efficient frequency conversion in a periodically poled LiNbO3 waveguide with spectral filtering. We achieve >50% external conversion efficiency and 600 noise counts per second at peak conversion.
DOI
10.1364/cleo_qels.2013.jth2a.86

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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.