Abstract
We report a telecom-band single-photon detector for gigahertz clocked quantum key distribution systems. The single-photon detector is based on a sinusoidally gated InGaAs/InP avalanche photodiode. The gate repetition frequency of the single-photon detector reached 1.5 GHz. A quantum efficiency of 10.8 % at 1550 nm was obtained with a dark count probability per gate of 6.3 x 10(-7) and an afterpulsing probability of 2.8 %. Moreover, the maximum detection rate of the detector is 20 MHz.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Arsenicals / chemistry*
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Arsenicals / radiation effects
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Computer-Aided Design
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Equipment Design
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Equipment Failure Analysis
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Indium / chemistry*
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Indium / radiation effects
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Microwaves
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Phosphines / chemistry*
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Phosphines / radiation effects
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Photometry / instrumentation*
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Photons
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Reproducibility of Results
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Semiconductors*
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Sensitivity and Specificity
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Telecommunications / instrumentation*
Substances
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Arsenicals
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Phosphines
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Indium
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indium arsenide
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indium phosphide