PT Journal
AU Słysz, W
   Węgrzecki, M
   Bar, J
   Grabiec, P
   Gol'tsman, GN
   Verevkin, A
   Sobolewski, R
TI NbN superconducting single-photon detector coupled with a communication fiber
SO Elektronika : konstrukcje, technologie, zastosowania
PY 2005
BP 51
EP 52
VL 46
IS 6
LA Polish
DE NbN SSPD; SNSPD
AB We present novel superconducting single-photon detectors (SSPDs), ba­sed on ultrathin NbN films, designed for fiber-based quantum communica­tions (lambda = 1.3 žm and 1.55 žm). For fiber-based operation, our SSPDs contain a special micromechanical construction integrated with the NbN structure, which enables efficient and mechanically very stabile fiber coupling. The detectors combine GHz counting rate, high quantum efficiency and very low level of dark counts. At 1.3 - 1.55 žm wavelength range our detector exhibits a quantum efficiency up to 10%.
ER