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Performance of SNSPDs at varying cooling conditions

Hofherr, M. and Rall, D. and Ilin, K. and Wünsch, S. and Semenov, A. D. and Hübers, H.-W. and Siegel, M. (2010) Performance of SNSPDs at varying cooling conditions. In: Tagungsband, p. 48. DLR. Kryo 2010, 03.-05.10.2010, Zeuthen, Brandenburg.

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Abstract

For superconducting nanowire single-photon detectors (SNSPD), there is a wide market of applications, like correlation spectroscopy or quantum cryptography, that profits from detectors with large speed and high detection efficiency. SNSPDs made of ultra-thin NbN films, patterned as a meander nanowire with a width in the range of 100 nm, offer a great change for the future to cover these specifications. NbN has been proven to be an excellent material for the development of SNSPD. In context of high detection efficiency, a very low dark count rate is needed to satisfy the demands of several applications. Former studies show, that there is a certain relation between the detection mechanism and the dark counts [1], [2]. The origin of dark counts is due to thermal fluctuations in the meander structure of a SNSPD. To reduce this dark count rate, an investigation of influence of cooling conditions on the dark counts is necessary.

Document Type:Conference or Workshop Item (Poster)
Title:Performance of SNSPDs at varying cooling conditions
Authors:
AuthorsInstitution or Email of Authors
Hofherr, M.Institut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut für Technolgie (KIT), Hertzstraße
Rall, D.Institut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut für Technolgie (K1Institut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut für Technolgie (KIT), HertzstraßeIT), Hertzstraße
Ilin, K.Institut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut für Technolgie (KIT), Hertzstraße
Wünsch, S.Institut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut für Technolgie (KIT), Hertzstraße
Semenov, A. D.Alexei.Semenov@dlr.de
Hübers, H.-W.heinz-wilhelm.huebers@dlr.de
Siegel, M.Institut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut für Technolgie (KIT), Hertzstraße
Date:October 2010
Journal or Publication Title:Tagungsband
Page Range:p. 48
Publisher:DLR
Status:Published
Keywords:Performance of SNSPDs at varying cooling conditions, nanowire single-photon detectors, (SNSPD), correlation spectroscopy, quantum cryptography, ultra-thin NbN films, high detection efficiency, low dark count rate
Event Title:Kryo 2010
Event Location:Zeuthen, Brandenburg
Event Type:national Conference
Event Dates:03.-05.10.2010
Organizer:DLR
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Transport
HGF - Program Themes:Traffic Management
DLR - Research area:Transport
DLR - Program:V VM - Verkehrsmanagement
DLR - Research theme (Project):V - FAMOUS (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Terahertz and Infrared Sensors
Deposited By: Ulrike Stiebeler
Deposited On:04 Jan 2011 17:25
Last Modified:04 Jan 2011 17:25

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