We demonstrate upconversion single-photon detection for the 1550-nm band using a PPLN waveguide, long-wavelength pump, and narrowband filtering. We achievetotal-system detection efficiency of 30% with noise at the dark-count level of a silicon APD.
© 2013 OSA
G. Shentu, J. S. Pelc, X. Wang, M. Fejer, Q. Zhang, and J. Pan, "Ultra-low Noise Upconversion Single-Photon Detector in the Telecom Band," in CLEO: 2013, OSA Technical Digest (online) (Optical Society of America, 2013), paper QM4L.5.
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