Journal
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Volume 23, Issue 3, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASC.2013.2251054
Keywords
Infrared single-photon detectors; superconducting device fabrication; superconducting NbN films; thin film devices
Funding
- FPS R&D in Priority Areas of Russian ST Development [16.513.11.3017]
- FPS Scientific and scientific-pedagogical personnel of innovative Russia [14B37.21.1106]
- Russian Foundation for Basic Research [12-02-31841, ERA-Net. Rus-091 ADAPTER]
- Russian Quantum Center
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In this paper, we present our approaches to the development of fiber-coupled superconducting single photon detectors with enhanced photon absorption. For such devices we have measured detection efficiency in wavelength range from 500 to 2000 nm. The best fiber coupled devices exhibit detection efficiency of 44.5% at 1310 nm wavelength and 35.5% at 1550 nm at 10 dark counts per second.
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