Long-wavelength-pumped upconversion single-photon detector at 1550 nm: performance and noise analysis
2011; Optica Publishing Group; Volume: 19; Issue: 22 Linguagem: Inglês
10.1364/oe.19.021445
ISSN1094-4087
AutoresJason S. Pelc, Long Ma, Colin R. Phillips, Q. Zhang, Carsten Langrock, Oliver Slattery, Xiao Tang, M. M. Fejer,
Tópico(s)Quantum optics and atomic interactions
ResumoWe 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.
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