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High-efficiency superconducting nanowire single-photon detectors fabricated from MoSi thin-films

Authors
Verma, V. B.
Horansky, R. D.
Dyer, S. D.
Lita, A. E.
Vayshenker, I.
Marsili, F.
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Published in Optics Express. 2015, vol. 23, no. 26, p. 33792
Abstract We demonstrate high-efficiency superconducting nanowire single-photon detectors (SNSPDs) fabricated from MoSi thin-films. We measure a maximum system detection efficiency (SDE) of 87 +- 0.5 % at 1542 nm at a temperature of 0.7 K, with a jitter of 76 ps, maximum count rate approaching 10 MHz, and polarization dependence as low as 3.4 +- 0.7 % The SDE curves show saturation of the internal efficiency similar to WSi-based SNSPDs at temperatures as high as 2.3 K. We show that at similar cryogenic temperatures, MoSi SNSPDs achieve efficiencies comparable to WSi-based SNSPDs with nearly a factor of two reduction in jitter.
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VERMA, V. B. et al. High-efficiency superconducting nanowire single-photon detectors fabricated from MoSi thin-films. In: Optics Express, 2015, vol. 23, n° 26, p. 33792. https://archive-ouverte.unige.ch/unige:84124

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Deposited on : 2016-06-01

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