Journal
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
Volume 27, Issue 9, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-2048/27/9/095012
Keywords
superconducting single photon detectors; thin films; detection efficiency; response time; timing jitter
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Funding
- Russian state from the Ministry of Education and Science of the Russian Federation [14. B25.31.0007]
- targeted program 'Fundamental problems of nanostructure systems, nanomaterials and nanotechnologies' of NAS of Ukraine [26/13-H]
- Russian Quantum Center
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We fabricated and characterized nanowire superconducting single-photon detectors made of 4 nm thick amorphous MoxSi1-x films. At 1.7 K the best devices exhibit a detection efficiency (DE) up to 18% at 1.2 mu m wavelength of unpolarized light, a characteristic response time of about 6 ns and timing jitter of 120 ps. The DE was studied in wavelength range from 650 nm to 2500 nm. At wavelengths below 1200 nm these detectors reach their maximum DE limited by photon absorption in the thin MoSi film.
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