Detector Dead-Time Effects and Paralyzability in High-Speed Quantum Key Distribution

Published: September 10, 2007


Daniel Rogers, Joshua C. Bienfang, Anastase Nakassis, Hai Xu, Charles W. Clark


Recent advances in quantum key distribution (QKD) have given rise to systems that operate at transmission periods significantly shorter than the dead times of their component single-photon detectors. As systems continue to increase in transmission rate, security concerns associated with detector dead times can limit the production rate of sifted bits. We present a model of high-speed QKD in this limit that identifies an optimum transmission rate for a system with given link loss and detector response characteristics.
Citation: New Journal of Physics
Volume: 9
Issue: 319
Pub Type: Journals

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photon counting, quantum communications, quantum cryptography, single-photon detectors
Created September 10, 2007, Updated February 17, 2017