PT Unknown AU Smirnov, K Korneev, A Minaeva, O Divochij, A Rubtsova, I Antipov, A Ryabchun, S Okunev, O Milostnaya, I Chulkova, G Voronov, B Kaurova, N Seleznev, V Korotetskaya, Y Gol’tsman, G TI Superconducting single-photon detector for near- and middle IR wavelength range SE Proc. 16th Int. Crimean Microwave and Telecommunication Technology PY 2006 BP 684 EP 685 VL 2 DI 10.1109/CRMICO.2006.256157 LA Russian DE NbN SSPD; SNSPD AB Presented in this paper are the results of research of NbN-film superconducting single-photon detector. At 2 K temperature, quantum efficiency in the visible light (0.56 mum) reaches 30-40 %. With the wavelength increase quantum efficiency decreases and comes to  20% at 1.55 mum and  0.02% at 5.6 mum. Minimum dark counts rate is 2times10-4s-1. The jitter of detector is 35 ps. The detector was successfully implemented for integrated circuits non-invasive optical testing. It is also perspective for quantum cryptography systems ER