Journal
OPTICS EXPRESS
Volume 19, Issue 22, Pages 21445-21456Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.021445
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Funding
- Robert N. Noyce Stanford Graduate Fellowship
- United States AFOSR [FA9550-09-1-0233]
- National Institutes of Standards and Technology (NIST) quantum information initiative
- Crystal Technology, Inc.
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We demonstrate upconversion-assisted single-photon detection for the 1.55-mu m 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. (C) 2011 Optical Society of America
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