Asymmetric “4+2” protocol for quantum key distribution with finite resources

Asymmetric “4+2” protocol for quantum key distribution with finite resources In this paper, we present an asymmetric “4+2” protocol for quantum key distribution with finite photon pulses. The main work of this paper focuses on the composable security proof for this protocol in a finite-key scenario. Based on the essence security basis of the original “4+2” protocol proposed by Huttner et al. (Phys Rev A 51(3):1863–1869, 1995), we first develop the squashing model for this protocol with the quantum non-demolition measure theory. From this model, against the collective photon-number-splitting attack, we then provide the security proof (formulas of finite-key security bounds) for this protocol. The expected performance of this protocol are also evaluated on a priori reasonable expected values of parameters. Our work shows that the performance we derived is the lower one and it can cover long distances in the lossy channel. Quantum Information Processing Springer Journals

Asymmetric “4+2” protocol for quantum key distribution with finite resources

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Springer US
Copyright © 2013 by Springer Science+Business Media New York
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
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  • Unconditional security of the Bennett 1992 quantum key-distribution scheme with strong reference pulse
    Tamaki, K; Lütkenhaus, N; Koashi, M; Batuwantu-dawe, J

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