Finite-key analysis of high-dimensional time–energy entanglement-based quantum key distribution

Finite-key analysis of high-dimensional time–energy entanglement-based quantum key distribution We present a security analysis against collective attacks for a time–energy entanglement-based quantum key distribution protocol, given the practical constraints of single-photon detector efficiency, channel loss, and finite-key considerations. We find a positive secure-key capacity when the key length increases beyond $$10^{4}$$ 10 4 for eight-dimensional systems. The minimum key length required is reduced by the ability to post-select on coincident single-photon detection events. Including finite-key effects, we show the ability to establish a shared secret key over a 200 km fiber link. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Finite-key analysis of high-dimensional time–energy entanglement-based quantum key distribution

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Publisher
Springer US
Copyright
Copyright © 2015 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/s11128-014-0904-x
Publisher site
See Article on Publisher Site

Abstract

We present a security analysis against collective attacks for a time–energy entanglement-based quantum key distribution protocol, given the practical constraints of single-photon detector efficiency, channel loss, and finite-key considerations. We find a positive secure-key capacity when the key length increases beyond $$10^{4}$$ 10 4 for eight-dimensional systems. The minimum key length required is reduced by the ability to post-select on coincident single-photon detection events. Including finite-key effects, we show the ability to establish a shared secret key over a 200 km fiber link.

Journal

Quantum Information ProcessingSpringer Journals

Published: Jan 7, 2015

References

  • Security of continuous-variable quantum cryptography
    Ralph, TC
  • Higher-dimensional orbital-angular-momentum-based quantum key distribution with mutually unbiased bases
    Mafu, M; Dudley, A; Goyal, S; Giovannini, D; McLaren, M; Padgett, MJ; Konrad, T; Petruccione, F; Lütkenhaus, N; Forbes, A
  • Unconditional security of time-energy entanglement quantum key distribution using dual-basis interferometry
    Zhang, Z; Mower, J; Englund, D; Wong, FNC; Shapiro, JH
  • Continuous variable quantum key distribution: finite-key analysis of composable security against coherent attacks
    Furrer, F; Franz, T; Berta, M; Leverrier, A; Scholz, VB; Tomamichel, M; Werner, RF
  • Security of continuous-variable quantum key distribution against general attacks
    Leverrier, A; García-Patrón, R; Renner, R; Cerf, NJ
  • Nonlocal cancellation of dispersion
    Franson, JD

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