中国物理B ›› 2017, Vol. 26 ›› Issue (3): 30302-030302.doi: 10.1088/1674-1056/26/3/030302

• SPECIAL TOPIC—Soft matter and biological physics (Review) • 上一篇    下一篇

Two-step quantum secure direct communication scheme with frequency coding

Xue-Liang Zhao(赵学亮), Jun-Lin Li(李俊林), Peng-Hao Niu(牛鹏皓), Hong-Yang Ma(马鸿洋), Dong Ruan(阮东)   

  1. 1 Department of Physics, Tsinghua University, Beijing 100084, China;
    2 School of Science, Qingdao University of Technology, Qingdao 266000, China
  • 收稿日期:2016-10-19 修回日期:2016-12-15 出版日期:2017-03-05 发布日期:2017-03-05
  • 通讯作者: Dong Ruan E-mail:dongruan@tsinghua.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11175094, 91221205, and 11547035) and the National Basic Research Program of China (Grant No. 2015CB921002).

Two-step quantum secure direct communication scheme with frequency coding

Xue-Liang Zhao(赵学亮)1, Jun-Lin Li(李俊林)1, Peng-Hao Niu(牛鹏皓)1, Hong-Yang Ma(马鸿洋)2, Dong Ruan(阮东)1   

  1. 1 Department of Physics, Tsinghua University, Beijing 100084, China;
    2 School of Science, Qingdao University of Technology, Qingdao 266000, China
  • Received:2016-10-19 Revised:2016-12-15 Online:2017-03-05 Published:2017-03-05
  • Contact: Dong Ruan E-mail:dongruan@tsinghua.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11175094, 91221205, and 11547035) and the National Basic Research Program of China (Grant No. 2015CB921002).

摘要:

Quantum secure direct communication (QSDC) is an important branch of quantum cryptography. It can transmit secret information directly without establishing a key first, unlike quantum key distribution which requires this precursory event. Here we propose a QSDC scheme by applying the frequency coding technique to the two-step QSDC protocol, which enables the two-step QSDC protocol to work in a noisy environment. We have numerically simulated the performance of the protocol in a noisy channel, and the results show that the scheme is indeed robust against channel noise and loss. We also give an estimate of the channel noise upper bound.

关键词: quantum cryptography, quantum secure direct communication, frequency coding

Abstract:

Quantum secure direct communication (QSDC) is an important branch of quantum cryptography. It can transmit secret information directly without establishing a key first, unlike quantum key distribution which requires this precursory event. Here we propose a QSDC scheme by applying the frequency coding technique to the two-step QSDC protocol, which enables the two-step QSDC protocol to work in a noisy environment. We have numerically simulated the performance of the protocol in a noisy channel, and the results show that the scheme is indeed robust against channel noise and loss. We also give an estimate of the channel noise upper bound.

Key words: quantum cryptography, quantum secure direct communication, frequency coding

中图分类号:  (Quantum cryptography and communication security)

  • 03.67.Dd
03.67.Hk (Quantum communication)