Scientific article
Open access

Continuous high speed coherent one-way quantum key distribution

Published inOptics express, vol. 17, no. 16, p. 13326-13334
Publication date2009

Quantum key distribution (QKD) is the first commercial quantum technology operating at the level of single quanta and is a leading light for quantum-enabled photonic technologies. However, controlling these quantum optical systems in real world environments presents significant challenges. For the first time, we have brought together three key concepts for future QKD systems: a simple high-speed protocol; high performance detection; and integration both, at the component level and for standard fibre network connectivity. The QKD system is capable of continuous and autonomous operation, generating secret keys in real time. Laboratory and field tests were performed and comparisons made with robust InGaAs avalanche photodiodes and superconducting detectors. We report the first real world implementation of a fully functional QKD system over a 43dBloss (150km) transmission line in the Swisscom fibre optic network where we obtained average real-time distribution rates over 3 hours of 2.5bps.

Citation (ISO format)
STUCKI, Damien et al. Continuous high speed coherent one-way quantum key distribution. In: Optics express, 2009, vol. 17, n° 16, p. 13326–13334. doi: 10.1364/oe.17.013326
Main files (1)
Article (Accepted version)
ISSN of the journal1094-4087

Technical informations

Creation10/08/2009 9:38:00 AM
First validation10/08/2009 9:38:00 AM
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