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Secure quantum key distribution over 421 km of optical fiber

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arxiv 1807.03222 v1 pith:GG53J74S submitted 2018-07-09 quant-ph

Alberto Boaron , Gianluca Boso , Davide Rusca , Cédric Vulliez , Claire Autebert , Misael Caloz , Matthieu Perrenoud , Gaëtan Gras
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Félix Bussières Ming-Jun Li Daniel Nolan Anthony Martin Hugo Zbinden
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classification quant-ph
keywords distributionquantumfibersecretadvantageapproachcombineddetectors
verification ladder T0 review T1 audit T2 compute T3 formal
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We present a quantum key distribution system with a 2.5 GHz repetition rate using a three-state time-bin protocol combined with a one-decoy approach. Taking advantage of superconducting single-photon detectors optimized for quantum key distribution and ultra low-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.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Security proofs for practical QKD: variations, techniques, gaps, and limitations

    quant-ph 2025-02 accept novelty 6.0 of 10

    A critical review of decoy-state BB84 security proofs identifies common gaps and shows that no current proof meets the full standard of completeness, modularity, and verifiability.

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