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Origin of intrinsic dark count in superconducting nanowire single-photon detectors.
- Source :
- Applied Physics Letters; 10/17/2011, Vol. 99 Issue 16, p161105, 3p, 2 Graphs
- Publication Year :
- 2011
-
Abstract
- The origin of the decoherence in superconducting nanowire single-photon detectors, the so-called dark count, was investigated. We measured the direct-current characteristics and bias-current dependencies of the dark count rate in a wide range of temperatures from 0.5 K to 4.0 K, and analyzed the results by theoretical models of thermal fluctuations of vortices. Our results indicate that the current-assisted unbinding of vortex-antivortex pairs is the dominant origin of the dark count. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 99
- Issue :
- 16
- Database :
- Complementary Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 66745062
- Full Text :
- https://doi.org/10.1063/1.3652908