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Title

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

Authors
Grünenfelder, Fadri
Published in Applied Physics Letters. 2018, vol. 112, no. 17, p. 171104
Abstract 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.
Keywords Quantum Key Distribution
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Article (Published version) (517 Kb) - document accessible for UNIGE members only Limited access to UNIGE (until 2019-05-09)
Other version: http://aip.scitation.org/doi/10.1063/1.5023340
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Research group Groupe Zbinden
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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. https://archive-ouverte.unige.ch/unige:107046

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Deposited on : 2018-08-15

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