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Proceedings Paper

A single-photon detector for high-speed telecom-band quantum communication applications
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Paper 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.

Paper Details

Date Published: 14 September 2005
PDF: 6 pages
Proc. SPIE 5893, Quantum Communications and Quantum Imaging III, 589314 (14 September 2005); doi: 10.1117/12.616188
Show Author Affiliations
Chuang Liang, Northwestern Univ. (United States)
Kim F. Lee, Northwestern Univ. (United States)
Paul L. Voss, Northwestern Univ. (United States)
Eric Corndorf, Northwestern Univ. (United States)
Gregory S. Kanter, Northwestern Univ. (United States)
Jun Chen, Northwestern Univ. (United States)
Xiaoying Li, Northwestern Univ. (United States)
Prem Kumar, Northwestern Univ. (United States)

Published in SPIE Proceedings Vol. 5893:
Quantum Communications and Quantum Imaging III
Ronald E. Meyers; Yanhua Shih, Editor(s)

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