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Opt Express. 2011 Oct 24;19(22):21445-56. doi: 10.1364/OE.19.021445.

Long-wavelength-pumped upconversion single-photon detector at 1550 nm: performance and noise analysis.

Author information

1
E. L. Ginzton Laboratory, Stanford University, Stanford, California, USA. jpelc@stanford.edu

Abstract

We demonstrate upconversion-assisted single-photon detection for the 1.55-μm telecommunications band based on a periodically poled lithium niobate (PPLN) waveguide pumped by a monolithic PPLN optical parametric oscillator. We achieve an internal conversion efficiency of 86%, which results in an overall system detection efficiency of 37%, with excess noise as low as 10(3) counts s(-1). We measure the dark count rate versus the upconversion pump-signal frequency separation and find the results to be consistent with noise photon generation by spontaneous anti-Stokes Raman scattering. These results enable detailed design guidelines for the development of low-noise quantum frequency conversion systems, which will be an important component of fiber-optic quantum networks.

PMID:
22108994
DOI:
10.1364/OE.19.021445

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