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Detection Efficiency of a Spiral-Nanowire Superconducting Single-Photon Detector

Henrich, Dagmar and Rehm, L and Dörner, S and Hofherr, M. and Ilin, K. and Semenov, Alexey and Zotova, Anna and Vodolazov, Denis and Siegel, Michael (2013) Detection Efficiency of a Spiral-Nanowire Superconducting Single-Photon Detector. IEEE Transactions on Applied Superconductivity, 23 (3), p. 2200205. IEEE - Institute of Electrical and Electronics Engineers. DOI: 10.1109/TASC.2012.2235515 ISSN 1051-8223

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Abstract

We investigate the improvement of detection efficiency by a spiral layout of a Superconducting Nanowire Single-Photon Detector (SNSPD). The design is less susceptible to the critical current reduction due to turns in the nanowire than the classical meander design. Detector samples with different nanowire width from 300 to 100 nm are structured from a 4 nm thick NbN film deposited on sapphire substrates. The critical current IC(4.2 K) for spiral, meander, and simple bridge structures is measured and compared. On the 100 nm wide samples, the detection efficiency is measured in the wavelength range 400-1700 nm and the cut-off wavelength of the hot-spot plateau is determined. In the optical range, the spiral detector reaches a detection efficiency of 27.6%, which is ~1.5 times the value of the meander. In the the infrared range the detection efficiency is more than doubled.

Item URL in elib:https://elib.dlr.de/85103/
Document Type:Article
Title:Detection Efficiency of a Spiral-Nanowire Superconducting Single-Photon Detector
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Henrich, DagmarInstitut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut für Technolgie (KIT), Hertzstrasse 16, 76187 Karlsruhe, GermanyUNSPECIFIED
Rehm, LInstitut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut für Technolgie (KIT), Hertzstrasse 16, 76187 Karlsruhe, GermanyUNSPECIFIED
Dörner, SInstitut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut für Technolgie (KIT), Hertzstrasse 16, 76187 Karlsruhe, GermanyUNSPECIFIED
Hofherr, M. Institut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut für Technolgie (KIT), Hertzstrasse 16, 76187 Karlsruhe, GermanyUNSPECIFIED
Ilin, K.Institut für Mikro- und Nanoelektronische Systeme, Uni KarlsruheUNSPECIFIED
Semenov, AlexeyAlexei.Semenov (at) dlr.deUNSPECIFIED
Zotova, AnnaInstitute for Physics of Microstructures, Russian Academy of Sciences, 603950, Nizhny Novgorod, GSP-105, RussiaUNSPECIFIED
Vodolazov, DenisInstitute for Physics of Microstructures, Russian Academy of Sciences, 603950, Nizhny Novgorod, GSP-105, RussiaUNSPECIFIED
Siegel, MichaelInstitut für Mikro- und Nanoelektronische Systeme, Universität KarlsruheUNSPECIFIED
Date:June 2013
Journal or Publication Title:IEEE Transactions on Applied Superconductivity
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:23
DOI :10.1109/TASC.2012.2235515
Page Range:p. 2200205
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:1051-8223
Status:Published
Keywords:Critical current, Nanoscale devices, Superconducting photodetectors
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Optische Sensorik - Theorie, Kalibration (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Experimentelle Planetenphysik
Deposited By: Semenov, Prof.Dr. Alexey
Deposited On:21 Nov 2013 09:02
Last Modified:06 Sep 2019 15:18

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