Single-photon experiments at telecommunication wavelengths using nanowire superconducting detectors

The authors report fiber-coupled superconducting single-photon detectors with specifications that exceed those of avalanche photodiodes, operating at telecommunication wavelength, in sensitivity, temporal resoln., and repetition frequency. The improved performance is demonstrated by measuring the intensity correlation function g(2)(t) of single-photon states at 1300 nm produced by single semiconductor quantum dots. [on SciFinder (R)