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Improved energy resolution of a superconducting single-photon detector

Semenov, Alexey and Haas, Philipp and Hübers, Heinz-Wilhelm and Ilin, Konstantin and Siegel, Michael and Kirste, Alexander and Schurig, Thomas and Herrmann, Rudolf (2008) Improved energy resolution of a superconducting single-photon detector. SPIE. High Energy, Optical, and Infrared Detectors for Astronomy III, 2008-06-23, Marseille (France).

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Official URL: http://dx.doi.org/10.1117/12.789351


We demonstrated successful operation of an NbN single photon detector in the temperature range from 6 K to 1.2 K using a <sup>3</sup>He sorption refrigerator combined with a pulse-tube mechanical cooler. The detector was read out either by microwave amplifiers or by a broadband SQUID-amplifier that limited the maximum counting rate to 107 counts per second. This counting rate was only one third of the maximum rate provided by the detector. Besides an increase in the quantum efficiency in the visible and near-infrared spectral range with the decrease of the operation temperature, we found a more than twofold improvement in the energy resolution as compared to earlier demonstrated 1 eV at 6.5 K. The noise equivalent power estimated at 4.2 K for visible light was better than 10<sup>-18</sup> W Hz<sup>1/2</sup>. We verified that the lowest achieved dark count rate was still caused by the harsh electrical conditions in the mechanical cooler.

Item URL in elib:https://elib.dlr.de/56535/
Document Type:Conference or Workshop Item (Speech)
Title:Improved energy resolution of a superconducting single-photon detector
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Ilin, KonstantinUniversity of KarlsruheUNSPECIFIED
Siegel, MichaelUniversity of KarlsruheUNSPECIFIED
Kirste, AlexanderPTB BerlinUNSPECIFIED
Schurig, ThomasPTB BerlinUNSPECIFIED
Herrmann, RudolfInstitute of Applied Photonics, BerlinUNSPECIFIED
Date:July 2008
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Number of Pages:7
Series Name:Proceedings of SPIE
Keywords:Superconducting single-photon detector, visible and near-infrared spectral range, energy resolution
Event Title:High Energy, Optical, and Infrared Detectors for Astronomy III
Event Location:Marseille (France)
Event Type:international Conference
Event Dates:2008-06-23
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Vorhaben IR-Astronomie (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Terahertz and Infrared Sensors
Deposited By: Semenov, Prof.Dr. Alexey
Deposited On:15 Dec 2008
Last Modified:27 Apr 2009 15:33

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