Scientific article
Open access

Finite-key analysis for the 1-decoy state QKD protocol

Published inApplied Physics Letters, vol. 112, no. 17, 171104
Publication date2018

It has been shown that in the asymptotic case of infinite-key length, the 2-decoy state Quantum Key Distribution (QKD) protocol outperforms the 1-decoy state protocol. Here, we present a finite-key analysis of the 1-decoy method. Interestingly, we find that for practical block sizes of up to 10^8 bits, the 1-decoy protocol achieves for almost all experimental settings higher secret key rates than the 2-decoy protocol. Since using only one decoy is also easier to implement, we conclude that it is the best choice for QKD, in most common practical scenarios.

  • Quantum Key Distribution
Research group
Citation (ISO format)
RUSCA, Davide et al. Finite-key analysis for the 1-decoy state QKD protocol. In: Applied Physics Letters, 2018, vol. 112, n° 17, p. 171104. doi: 10.1063/1.5023340
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Article (Published version)
ISSN of the journal0003-6951

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