Single photonics at telecom wavelengths using nanowire superconducting detectors

Details Single photonics at telecom wavelengths using nanowire superconducting detectors Single photonics at telecom wavelengths using nanowire superconducting detectors

2006-10-12

arxiv.org/abs/physics/0610091v1

Physics

Instrumentation and Detectors

7 pages, 5 figures - submitted 12 OCT 2006

Scientific paper

10.1063/1.2752108

Single photonic applications - such as quantum key distribution - rely on the transmission of single photons, and require the ultimate sensitivity that an optical detector can achieve. Single-photon detectors must convert the energy of an optical pulse containing a single photon into a measurable electrical signal. We report on fiber-coupled superconducting single-photon detectors (SSPDs) with specifications that exceed those of avalanche photodiodes (APDs), operating at telecommunication wavelength, in sensitivity, temporal resolution and repetition frequency. The improved performance is demonstrated by measuring the intensity correlation function g(2)(t) of single-photon states at 1300nm produced by single semiconductor quantum dots (QDs).

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