Dependence of dark count rates in superconducting single photon detectors on the filtering effect of standard single mode optical fibers

Autor:	Konstantin Smirnov, Gregory Goltsman, A. Antipov, Alexander Divochiy, Y. Vachtomin
Rok vydání:	2015
Předmět:	Superconductivity Physics Photon Optical fiber genetic structures business.industry Photon detector General Engineering Single-mode optical fiber Physics::Optics General Physics and Astronomy Bending law.invention Wavelength Optics law Optoelectronics sense organs business Background radiation
Zdroj:	Applied Physics Express. 8:022501
ISSN:	1882-0786 1882-0778
DOI:	10.7567/apex.8.022501
Popis:	We found that background radiation limits the dark count rates of superconducting single photon detectors coupled to standard single mode optical fibers to a minimum level when the source temperature of the photons is close to 300 K. We measured this level to be 103 cps, which was confirmed by a theoretical analysis of the background radiation influence. We also investigated the filtering-effect of cooled single mode optical fibers with different bending diameters and showed that for superconducting photon receivers with operating wavelengths below 2 ?m the minimum dark count rate can be significantly decreased down to 0.1 cps.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::46f9c5e00da1014f9f114ee48773fc6b https://doi.org/10.7567/apex.8.022501 Zobrazit plný text záznamu