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arxiv: 1402.4526 · v1 · pith:VMUIVAUSnew · submitted 2014-02-18 · ❄️ cond-mat.supr-con

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 This is my paper
classification ❄️ cond-mat.supr-con
keywords detectionfabricatedamorphousbelowdetectorsefficiencynanowirephoton
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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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