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arXiv · 1504.02793

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

V. B. Verma·B. Korzh·F. Bussières·R. D. Horansky·S. D. Dyer·A. E. Lita·I. Vayshenker·F. Marsili·M. D. Shaw·H. Zbinden·R. P. Mirin·S. W. Nam
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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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V. B. Verma, B. Korzh, F. Bussières, R. D. Horansky, S. D. Dyer, A. E. Lita, I. Vayshenker, F. Marsili, M. D. Shaw, H. Zbinden, R. P. Mirin, S. W. Nam. 2015-04-10. High-efficiency superconducting nanowire single-photon detectors fabricated from MoSi thin-films. https://doi.org/10.1364/oe.23.033792

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