Secure Quantum Key Distribution over 421 km of Optical Fiber

Article Article scientifique Article Secure Quantum Key Distribution over 421 km of Optical Fiber eng 2018 author Boaron Alberto 728934 author Boso Gianluca 826422 author Rusca Davide 871285 author Vulliez Cédric 663590 author Autebert Claire 868267 author Caloz Misael 781492 author Perrenoud Matthieu 867241 author Gras Gaétan Daniel Michel 880210 author Bussieres Félix 718040 author Li Ming-Jun author Nolan Daniel author Martin Anthony 771228 author Zbinden Hugo 0000-0002-9237-1700 29543 190502 10.1103/PhysRevLett.121.190502 0031-9007 We present a quantum key distribution system with a 2.5 GHz repetition rate using a three-state timebin protocol combined with a one-decoy approach. Taking advantage of superconducting single-photon detectors optimized for quantum key distribution and ultralow-loss fiber, we can distribute secret keys at a maximum distance of 421 km and obtain secret key rates of 6.5 bps over 405 km. Dewey 500.2 35 Groupe de physique appliquée 135 false 1408 Groupe Zbinden Physical Review Letters 121 ef702d11-cf4d-4275-a73f-d5e11320d773 Article (Published version) Public PhysRevLett.121.190502.pdf 247627 application/pdf openAccess Faculté des sciences / Section de physique / Groupe de physique appliquée

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Secure Quantum Key Distribution over 421 km of Optical Fiber	Physical Review Letters			2018	671	1,231

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