Quantum key distribution for 10 Gb/s dense wavelength division multiplexing networks

  title={Quantum key distribution for 10 Gb/s dense wavelength division multiplexing networks},
  author={K. A. Patel and James F. Dynes and Marco Lucamarini and Iris Choi and A. W. Sharpe and Z. L. Yuan and Richard Vincent Penty and Andrew J. Shields},
  journal={Applied Physics Letters},
We demonstrate quantum key distribution (QKD) with bidirectional 10 Gb/s classical data channels in a single fiber using dense wavelength division multiplexing. Record secure key rates of 2.38 Mbps and fiber distances up to 70 km are achieved. Data channels are simultaneously monitored for error-free operation. The robustness of QKD is further demonstrated with a secure key rate of 445 kbps over 25 km, obtained in the presence of data lasers launching conventional 0 dBm power. We discuss the… 
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