Paper
14 September 2005 A single-photon detector for high-speed telecom-band quantum communication applications
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Abstract
We present the design and construction of a high-speed telecom-band (1.5 μm) single-photon counting system based on an InGaAs/InP avalanche photodiode (APD) operating in the gated Geiger mode. The detector can be gated at high speeds (we examine its performance up to 25 MHz) to maximize the counting rate in long-distance, telecom-band, fiber-optic quantum communication applications. Narrow gate pulses (250 ps full width at half maximum) are used to reduce the dark-count and the after-pulse probability. In order to count the avalanche events, we employ a high-speed comparator to sample the unfiltered and unamplified avalanche photocurrent. The APD and all the associated electronics are integrated onto a printed circuit board with a computer interface. In addition, we cool the APD to -27°C to reduce the dark-count probability.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Chuang Liang, Kim F. Lee, Paul L. Voss, Eric Corndorf, Gregory S. Kanter, Jun Chen, Xiaoying Li, and Prem Kumar "A single-photon detector for high-speed telecom-band quantum communication applications", Proc. SPIE 5893, Quantum Communications and Quantum Imaging III, 589314 (14 September 2005); https://doi.org/10.1117/12.616188
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Cited by 4 scholarly publications.
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KEYWORDS
Avalanche photodetectors

Single photon detectors

Quantum efficiency

Picosecond phenomena

Sensors

Quantum communications

Clocks

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