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Journal of Modern Optics

Single-photon counters in the telecom wavelength region of 1550 nm for quantum information processing

Mohamed Bourennane, Anders Karlsson, Juan Pena Ciscar, Markus Mathés

Published Nov 1, 2001• 21 citations
Publisher

Abstract

We describe the status of commercially available InGaAs InP avalanche photodiodes for use as single-photon counters in the telecom wavelength region of 1550 nm.
DOI
10.1080/09500340108240901

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Using InGaAs/InP avalanche photodiodes as sensors and coaxial cables as reflection lines to reject spike signals, we have firstly employed the ``timing filtering'' gates to pick out avalanche signals and have realized the single photon detection at 1550 nm in the temperature range of thermoelectric cooling. A ratio of the dark count rate to the detection efficiency was obtained to be 9 × 10 −5 at 223 K. When the detector is applied to a practical quantum key distribution system, the transmission distance can reach 89.5 km and the repetition rate can reach 0.33 MHz.