Kuzmin, Artem and Doerner, Stefan and Wuensch, S. H. and Ilin, K. and Siegel, M. and Semenov, Alexey (2019) Geometrical jitter and bolometric regime in photon detection by straight superconducting nanowire. IEEE Transactions on Applied Superconductivity, 29 (5), e2201105. IEEE - Institute of Electrical and Electronics Engineers. DOI: 10.1109/TASC.2019.2908132 ISSN 1051-8223
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Abstract
We present a direct observation of the geometrical jitter in single photon detection by a straight superconducting nanowire. Differential measurement technique was applied to the 180-µm long nanowire similar to those commonly used in the technology of superconducting nanowire single photon detectors (SNSPD). A non-Gaussian geometrical jitter appears as a wide almost uniform probability distribution (histogram) of the delay time (latency) of the nanowire response to detected photon. White electrical noise of the readout electronics causes broadened, Gaussianshaped edges of the histogram. Subtracting noise contribution, we found for the geometrical jitter a standard deviation of ≈8.5 ps and the full width at half maximum (FWHM) of the distribution of ≈29 ps. FWHM corresponds to the propagation speed of the electrical signal along the nanowire of ≈6.2 × 10^6 m/s or 0.02 of the speed of light. Alternatively the propagation speed was estimated from the central frequency of the measured first-order self-resonance of the nanowire. Both values agree well with each other and with previously reported values. As the intensity of the incident photon flux increases, the wide probability distribution collapses into a much narrower Gaussian distribution with a standard deviation dominated by the noise of electronics. We associate the collapse of the histogram with the transition from the discrete, single photon detection to the uniform bolometric regime.
Item URL in elib: | https://elib.dlr.de/133318/ | |||||||||||||||||||||
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Document Type: | Article | |||||||||||||||||||||
Title: | Geometrical jitter and bolometric regime in photon detection by straight superconducting nanowire | |||||||||||||||||||||
Authors: |
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Date: | August 2019 | |||||||||||||||||||||
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: | 29 | |||||||||||||||||||||
DOI : | 10.1109/TASC.2019.2908132 | |||||||||||||||||||||
Page Range: | e2201105 | |||||||||||||||||||||
Publisher: | IEEE - Institute of Electrical and Electronics Engineers | |||||||||||||||||||||
ISSN: | 1051-8223 | |||||||||||||||||||||
Status: | Published | |||||||||||||||||||||
Keywords: | SNSPD, geometrical jitter, slow-wave transmission line, latency, photon vs bolometric detection | |||||||||||||||||||||
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 Technologien und Anwendungen | |||||||||||||||||||||
Location: | Berlin-Adlershof | |||||||||||||||||||||
Institutes and Institutions: | Institute of Optical Sensor Systems | |||||||||||||||||||||
Deposited By: | Semenov, Prof.Dr. Alexey | |||||||||||||||||||||
Deposited On: | 08 Jan 2020 09:18 | |||||||||||||||||||||
Last Modified: | 08 Jan 2020 09:18 |
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