Gigahertz decoy quantum key distribution with 1 Mbit/s secure key rate

A. R. Dixon; Z. L. Yuan; J. F. Dynes; A. W. Sharpe; A. J. Shields

doi:10.1364/OE.16.018790

Gigahertz decoy quantum key distribution with 1 Mbit/s secure key rate

Quantum Physics 2008-11-11 v1

Authors: A. R. Dixon , Z. L. Yuan , J. F. Dynes , A. W. Sharpe , A. J. Shields

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Abstract

We report the first gigahertz clocked decoy-protocol quantum key distribution (QKD). Record key rates have been achieved thanks to the use of self-differencing InGaAs avalanche photodiodes designed specifically for high speed single photon detection. The system is characterized with a secure key rate of 1.02 Mbit/s for a fiber distance of 20 km and 10.1 kbit/s for 100 km. As the present advance relies upon compact non-cryogenic detectors, it opens the door towards practical and low cost QKD systems to secure broadband communication in future.

Keywords

quantum key distribution

Cite

@article{arxiv.0810.1069,
  title  = {Gigahertz decoy quantum key distribution with 1 Mbit/s secure key rate},
  author = {A. R. Dixon and Z. L. Yuan and J. F. Dynes and A. W. Sharpe and A. J. Shields},
  journal= {arXiv preprint arXiv:0810.1069},
  year   = {2008}
}

Comments

14 pages, 3 figures

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