Nature Communications (Jul 2019)

Repeaterless quantum key distribution with efficient finite-key analysis overcoming the rate-distance limit

  • Kento Maeda,
  • Toshihiko Sasaki,
  • Masato Koashi

DOI
https://doi.org/10.1038/s41467-019-11008-z
Journal volume & issue
Vol. 10, no. 1
pp. 1 – 8

Abstract

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The recently proposed Twin Field QKD protocol allows to beat the linear scaling of the key rate with the channel losses. Here, the authors extend it including a full security proof in the finite block size regime, allowing for practically-relevant secure key rates.