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.
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Chuang Liang, Chuang Liang, Kim F. Lee, Kim F. Lee, Paul L. Voss, Paul L. Voss, Eric Corndorf, Eric Corndorf, Gregory S. Kanter, Gregory S. Kanter, Jun Chen, Jun Chen, Xiaoying Li, Xiaoying Li, Prem Kumar, 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); doi: 10.1117/12.616188; https://doi.org/10.1117/12.616188
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