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arXiv · 1402.4526

Superconducting nanowire single photon detectors fabricated from an amorphous Mo0.75Ge0.25 thin film

V. B. Verma·A. E. Lita·M. R. Vissers·F. Marsili·D. P. Pappas·R. P. Mirin·S. W. Nam
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Abstract

We present the characteristics of superconducting nanowire single photon detectors (SNSPDs) fabricated from amorphous Mo0.75Ge0.25 thin-films. Fabricated devices show a saturation of the internal detection efficiency at temperatures below 1 K, with system dark count rates below 500 counts per second. Operation in a Gifford-McMahon (GM) cryocooler at 2.5 K is possible with system detection efficiencies (SDE) exceeding 20% for SNSPDs which have not been optimized for high detection efficiency.

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V. B. Verma, A. E. Lita, M. R. Vissers, F. Marsili, D. P. Pappas, R. P. Mirin, S. W. Nam. 2014-02-18. Superconducting nanowire single photon detectors fabricated from an amorphous Mo0.75Ge0.25 thin film. https://doi.org/10.1063/1.4890277

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