Hofherr, Mattias and Rall, Dagmar and Ilin, Konstantin and Siegel, Michael and Semenov, Alexej and Hübers, H.-W. and Gippius, Nikolay (2010) Intrinsic detection efficiency of superconducting nanowire single-photon detectors with different thicknesses. Journal of Applied Physics, 108 (014507). American Institute of Physics (AIP). doi: 10.1063/1.3437043.
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Abstract
We evaluate experimentally the intrinsic detection efficiency IDE of superconducting NbN nanowire single-photon detectors in the range of wire thicknesses from 4 to 12 nm. The study is performed in the broad spectral interval between near-ultraviolet wavelength 400 nm and near-infrared wavelength 2000 nm light with plane waves at normal incidence. For visible light the IDE of the thinnest detectors reaches 70%. We use numerically computed absorptance of the nanowire-structures for the analysis of the experimental data. Variations in the detection efficiency with both the wire thickness and the wavelength evidence the red boundary of the hot-spot photon-detection mechanism. We explain the detection at larger wavelengths invoking thermal excitation of magnetic Pearl vortices over the potential barrier at the edges of the wire.
Item URL in elib: | https://elib.dlr.de/67725/ | ||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||
Title: | Intrinsic detection efficiency of superconducting nanowire single-photon detectors with different thicknesses | ||||||||||||||||||||||||
Authors: |
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Date: | 2010 | ||||||||||||||||||||||||
Journal or Publication Title: | Journal of Applied Physics | ||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||||||
Volume: | 108 | ||||||||||||||||||||||||
DOI : | 10.1063/1.3437043 | ||||||||||||||||||||||||
Publisher: | American Institute of Physics (AIP) | ||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||
Keywords: | Superconducting nanowiers, photon detection, Pearl vortices | ||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport (old) | ||||||||||||||||||||||||
HGF - Program: | Space (old) | ||||||||||||||||||||||||
HGF - Program Themes: | W - no assignment | ||||||||||||||||||||||||
DLR - Research area: | Space | ||||||||||||||||||||||||
DLR - Program: | W - no assignment | ||||||||||||||||||||||||
DLR - Research theme (Project): | W - no assignment (old) | ||||||||||||||||||||||||
Location: | Berlin-Adlershof | ||||||||||||||||||||||||
Institutes and Institutions: | Institute of Planetary Research > Terahertz and Infrared Sensors | ||||||||||||||||||||||||
Deposited By: | Semenov, Prof.Dr. Alexey | ||||||||||||||||||||||||
Deposited On: | 10 Jan 2011 09:37 | ||||||||||||||||||||||||
Last Modified: | 18 Dec 2019 04:19 |
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