Spectral sensitivity, quantum efficiency, and noise equivalent power of NbN superconducting single-photon detectors in the IR range

Author

Rubtsova, I. ; Korneev, A. ; Matvienko, V. ; Chulkova, G. ; Milostnaya, I. ; Goltsman, G. ; Pearlman, A. ; Slysz, W. ; Verevkin, A. ; Sobolewski, R.

Author_Institution

Moscow State Pedagogical Univ., Russia

fYear

2004

fDate

27 Sept.-1 Oct. 2004

Firstpage

461

Lastpage

462

Abstract

We have developed nanostructured NbN superconducting single-photon detectors capable of GHz-rate photon counting in the 0.4 to 5 μm wavelength range. Quantum efficiency of 30%, dark count rate 3×10^-4 s^-1, and NEP=10^-20 W/Hz^-12/ have been measured at the 1.3-μm wavelength for the device operating at 2.0 K.

Keywords

infrared detectors; nanostructured materials; niobium compounds; superconducting device noise; superconducting photodetectors; superconducting thin films; 0.4 to 5 micron; 2 K; IR detectors; NbN; NbN superconducting single photon detectors; dark count rate; nanostructured detectors; noise equivalent power; quantum efficiency; spectral sensitivity; Fabrication; Helium; Infrared detectors; Pulse amplifiers; Superconducting device noise; Superconducting epitaxial layers; Superconducting films; Superconductivity; Surface resistance; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on

Print_ISBN

0-7803-8490-3

Type

conf

DOI

10.1109/ICIMW.2004.1422163

Filename

1422163