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Korneev A, Minaeva O, Rubtsova I, Milostnaya I, Chulkova G, Voronov B, et al. Superconducting single-photon ultrathin NbN film detector. Quantum Electronics. 2005;35(8):698–700.
Abstract: Superconducting single-photon ultrathin NbN film detectors are studied. The development of manufacturing technology of detectors and the reduction of their operating temperature down to 2 K resulted in a considerable increase in their quantum efficiency, which reached in the visible region (at 0.56 μm) 30%—40%, i.e., achieved the limit determined by the absorption coefficient of the film. The quantum efficiency exponentially decreases with increasing wavelength, being equal to ~20% at 1.55 μm and ~0.02% at 5 μm. For the dark count rate of ~10-4s-1, the experimental equivalent noise power was 1.5×10-20 W Hz-1/2; it can be decreased in the future down to the record low value of 5×10-21 W Hz-1/2. The time resolution of the detector is 30 ps.
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Datesman AM, Schultz JC, Lichtenberger AW, Golish D, Walker CK, Kooi J. Fabrication and characterization of niobium diffusion-cooled hot-electron bolometers on silicon nitride membranes. IEEE Trans. Appl. Supercond.. 2005;15(2):928–31.
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Palermo C, Varani L, Vaissière J-C, Millithaler J-F, Starikov E, Shiktorov P, et al. Monte Carlo calculation of diffusion coefficient, noise spectral density and noise temperature in HgCdTe. In: Proc. AIP Conf. Vol 780.; 2005. p. 151–4.
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