A real-time QKD system based on FPGA

Hong-fei Zhang; Jian Wang; Ke Cui; Chun-li Luo; Sheng-zhao Lin; Lei Zhou; Hao Liang; Teng-yun Chen; Kai Chen; Jian-wei Pan

doi:10.1109/JLT.2012.2217394

A real-time QKD system based on FPGA

Quantum Physics 2016-11-18 v1 Cryptography and Security

Authors: Hong-fei Zhang , Jian Wang , Ke Cui , Chun-li Luo , Sheng-zhao Lin , Lei Zhou , Hao Liang , Teng-yun Chen , Kai Chen , Jian-wei Pan

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Abstract

A real-time Quantum Key Distribution System is developed in this paper. In the system, based on the feature of Field Programmable Gate Array (FPGA), secure key extraction control and algorithm have been optimally designed to perform sifting, error correction and privacy amplification altogether in real-time. In the QKD experiment information synchronization mechanism and high-speed classic data channel are designed to ensure the steady operation of the system. Decoy state and synchronous laser light source are used in the system, while the length of optical fiber between Alice and Bob is 20 km. With photons repetition frequency of 20 MHz, the final key rate could reach 17 kbps. Smooth and robust operation is verified with 6-hour continuous test and associated with encrypted voice communication test.

Keywords

quantum key distribution quantum error correction

Cite

@article{arxiv.1301.2383,
  title  = {A real-time QKD system based on FPGA},
  author = {Hong-fei Zhang and Jian Wang and Ke Cui and Chun-li Luo and Sheng-zhao Lin and Lei Zhou and Hao Liang and Teng-yun Chen and Kai Chen and Jian-wei Pan},
  journal= {arXiv preprint arXiv:1301.2383},
  year   = {2016}
}

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7 pages, 14 figures

A real-time QKD system based on FPGA

Abstract

Keywords

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