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Fiber-coupled nanowire photon counter at 1550   nm with 24% system detection efficiency

Xiaolong Hu, Tian Zhong, James E. White, Eric A. Dauler, Faraz Najafi, Charles H. Herder, Franco N.C. Wong, and Karl K. Berggren

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Abstract

We developed a fiber-coupled superconducting nanowire single-photon detector system in a close-cycled cryocooler and achieved 24% and 22% system detection efficiencies at wavelengths of 1550 and 1315 nm, respectively. The maximum dark count rate was ∼1000 counts∕s.

© 2009 Optical Society of America

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