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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

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

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Publisher
Springer US
Copyright
Copyright © 2013 by Springer Science+Business Media New York
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-013-0684-8
Publisher site
See Article on Publisher Site

References

  • 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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