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Investigation of WSi and NbN superconducting single-photon detectors in mid-IR range

IOP Conference Series: Materials Science and Engineering (2020) 781(1)
DOI: 10.1088/1757-899X/781/1/012011
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Abstract

Spectral characteristics of WSi and NbN superconducting single-photon detectors with different surface resistance and width of nanowire strips have been investigated in the wavelength range of 1.3-2.5 μm. WSi structures with narrower strips demonstrated better performance for detection of single photons in longer wavelength range. The difference in normalized photon count rate for such structures reaches one order of magnitude higher in comparison with structures based on NbN thin films at 2.5 μm.

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Antipov, A. V., Seleznev, V. A., Vakhtomin, Y. B., Morozov, P. V., Vasilev, D. D., Malevannaya, E. I., … Smirnov, K. (2020). Investigation of WSi and NbN superconducting single-photon detectors in mid-IR range. In IOP Conference Series: Materials Science and Engineering (Vol. 781). Institute of Physics Publishing. https://doi.org/10.1088/1757-899X/781/1/012011

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