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Fluctuations and dark count rates in superconducting NbN single-photon detectors

Engel, A. and Semenov, A. and Hübers, H.-W. and Ill'in, K. and Siegel, M. (2005) Fluctuations and dark count rates in superconducting NbN single-photon detectors. Physica Status Solidi (c), 2 (5), pp. 1668-1673. Wiley-VCH. DOI: 10.1002/pssc.200460809

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Abstract

We measured the temperature- and current-dependence of dark count rates of a superconducting single-photon detector. The detector's key element is a 84 nm wide meander strip line fabricated from an 5 nm thick NbN film. Due to its reduced dimensions various types of fluctuations cancause temporal and localizied transitions into a resistive state leading to dark count events. Adopting a recent refinement of the hot-spot model we achieve a satisfying description of the experimental dark count rates taking into account fluctuations of the Cooper-pair density and current-assisted unbinding of vortex-antivortex pairs.

Item URL in elib:https://elib.dlr.de/18776/
Document Type:Article
Additional Information: LIDO-Berichtsjahr=2005,
Title:Fluctuations and dark count rates in superconducting NbN single-photon detectors
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Engel, A.Physics Institute, University of Zurich, Zurich, SwitzerlandUNSPECIFIED
Semenov, A.UNSPECIFIEDUNSPECIFIED
Hübers, H.-W.UNSPECIFIEDUNSPECIFIED
Ill'in, K.Institute for Micro- and Nanoelectronic Systems, University of Karlsruhe, KarlsruheUNSPECIFIED
Siegel, M.Institute for Micro- and Nanoelectronic Systems, University of Karlsruhe, KarlsruheUNSPECIFIED
Date:2005
Journal or Publication Title:Physica Status Solidi (c)
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:2
DOI :10.1002/pssc.200460809
Page Range:pp. 1668-1673
Publisher:Wiley-VCH
Status:Published
Keywords:Supraleitung, Photonenzähler, Dünnschichtfilm, Nb, NbN, Dunkelstrom
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):UNSPECIFIED
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Deposited By: Pieth, Susanne
Deposited On:09 Oct 2005
Last Modified:14 Jan 2010 19:44

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