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

  title={Gigahertz decoy quantum key distribution with 1 Mbit/s secure key rate.},
  author={Alexander R. Dixon and Z. L. Yuan and James F. Dynes and A. W. Sharpe and Andrew J. Shields},
  journal={Optics express},
  volume={16 23},
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… Expand

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