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Quantum key distribution

High secret key rate goes a long way

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Exceptionally high secret key generation rates of 64 Mbits–1 and 115.8 Mbits–1 over a 10 km optical fibre link have been achieved, thanks to custom-built 14-pixel and 16-pixel superconducting nanowire single-photon detectors, respectively, and the use of fast quantum key distribution transmitters.

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Fig. 1: Concept scheme of a QKD system and comparison between the presented demonstrations by Li et al. and Grünenfelder et al.

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Authors and Affiliations

  1. Department of Physics and Astronomy, University of Florence, Sesto Fiorentino, Italy

    Davide Bacco

  2. QTI S.R.L., Florence, Italy

    Davide Bacco

  3. National Institute of Optics, National Research Council, Florence, Italy

    Maja Colautti

Authors
  1. Davide Bacco
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  2. Maja Colautti
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Corresponding authors

Correspondence to Davide Bacco or Maja Colautti.

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The authors declare no competing interests.

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Bacco, D., Colautti, M. High secret key rate goes a long way. Nat. Photon. 17, 378–379 (2023). https://doi.org/10.1038/s41566-023-01201-4

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  • DOI: https://doi.org/10.1038/s41566-023-01201-4

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