Title :
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
fDate :
27 Sept.-1 Oct. 2004
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;
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
DOI :
10.1109/ICIMW.2004.1422163
