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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).

Full text not available from this repository.

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

Abstract

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.

Document Type:Conference or Workshop Item (Speech)
Title:Improved energy resolution of a superconducting single-photon detector
Authors:
AuthorsInstitution or Email of Authors
Semenov, AlexeyUNSPECIFIED
Haas, PhilippUNSPECIFIED
Hübers, Heinz-WilhelmUNSPECIFIED
Ilin, KonstantinUniversity of Karlsruhe
Siegel, MichaelUniversity of Karlsruhe
Kirste, AlexanderPTB Berlin
Schurig, ThomasPTB Berlin
Herrmann, RudolfInstitute of Applied Photonics, Berlin
Date:July 2008
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Volume:7021
Number of Pages:7
Publisher:SPIE
Series Name:Proceedings of SPIE
Status:Published
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: Prof.Dr. Alexey Semenov
Deposited On:15 Dec 2008
Last Modified:27 Apr 2009 15:33

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