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Single-Photon Detectors Achieve 57 Percent Efficiency

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Superconducting nanowire devices incorporate optical cavity.

Hank Hogan

Researchers at MIT in Cambridge, Mass., at its Lincoln Laboratory in Lexington, Mass., and at Moscow State Pedagogical University have improved the detection efficiency of superconducting nanowire single-photon detectors at 1550 nm from 17 percent to 57 percent. The advance could have applications in ultralong-range optical communications, quantum cryptography and integrated circuit testing. Such applications require single-photon detectors with high efficiencies, high counting rates, low dark count rates, and little jitter or unwanted signal timing variation. Until now, superconducting...Read full article

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    Published: April 2006
    CommunicationsindustrialLincoln Laboratoryoptical cavityphoton detectorsResearch & TechnologySensors & DetectorsTech Pulse

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