1.5 GHz single-photon detection at telecommunication wavelengths using sinusoidally gated InGaAs/InP avalanche photodiode

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...

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Bibliographic Details
Published in:Optics express 2009-04, Vol.17 (8), p.6275-6282
Main Authors: Namekata, Naoto, Adachi, Shunsuke, Inoue, Shuichiro
Format: Article
Language:English
Subjects:
Arsenicals - chemistry
Arsenicals - radiation effects
Computer-Aided Design
Equipment Design
Equipment Failure Analysis
Indium - chemistry
Indium - radiation effects
Microwaves
Phosphines - chemistry
Phosphines - radiation effects
Photometry - instrumentation
Photons
Reproducibility of Results
Semiconductors
Sensitivity and Specificity
Telecommunications - instrumentation
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Summary: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.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.17.006275