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Geometrical jitter and bolometric regime in photon detection by straight superconducting nanowire

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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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/
Document Type:Article
Title:Geometrical jitter and bolometric regime in photon detection by straight superconducting nanowire
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kuzmin, Artemuniversity of karlsruheUNSPECIFIED
Doerner, Stefanuniversity of karlsruheUNSPECIFIED
Wuensch, S. H.Institute of Micro and Nanoelectronic systemsUNSPECIFIED
Ilin, K.Institute of Micro- and Nanosystems, University of KarlsruheUNSPECIFIED
Siegel, M.Institute of Micro- and Nano-electronic Systems, University of KarlsruheUNSPECIFIED
Semenov, AlexeyAlexei.Semenov (at) dlr.deUNSPECIFIED
Date:August 2019
Journal or Publication Title:IEEE Transactions on Applied Superconductivity
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1109/TASC.2019.2908132
Page Range:e2201105
Publisher:IEEE - Institute of Electrical and Electronics Engineers
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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