中国物理B ›› 2017, Vol. 26 ›› Issue (4): 40303-040303.doi: 10.1088/1674-1056/26/4/040303

• REVIEW • 上一篇    下一篇

Continuous variable quantum key distribution

Yong-Min Li(李永民), Xu-Yang Wang(王旭阳), Zeng-Liang Bai(白增亮), Wen-Yuan Liu(刘文元), Shen-Shen Yang(杨申申), Kun-Chi Peng(彭堃墀)   

  1. 1 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China;
    2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • 收稿日期:2016-11-21 修回日期:2016-12-28 出版日期:2017-04-05 发布日期:2017-04-05
  • 通讯作者: Yong-Min Li E-mail:yongmin@sxu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61378010 and 11504219), the Key Project of the Ministry of Science and Technology of China (Grant No. 2016YFA0301403), the Natural Science Foundation of Shanxi Province, China (Grant No. 2014011007-1), and the Program for the Outstanding Innovative Teams of Higher Learning Institutions of Shanxi Province, China.

Continuous variable quantum key distribution

Yong-Min Li(李永民)1,2, Xu-Yang Wang(王旭阳)1,2, Zeng-Liang Bai(白增亮)1,2, Wen-Yuan Liu(刘文元)1,2, Shen-Shen Yang(杨申申)1,2, Kun-Chi Peng(彭堃墀)1,2   

  1. 1 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China;
    2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • Received:2016-11-21 Revised:2016-12-28 Online:2017-04-05 Published:2017-04-05
  • Contact: Yong-Min Li E-mail:yongmin@sxu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61378010 and 11504219), the Key Project of the Ministry of Science and Technology of China (Grant No. 2016YFA0301403), the Natural Science Foundation of Shanxi Province, China (Grant No. 2014011007-1), and the Program for the Outstanding Innovative Teams of Higher Learning Institutions of Shanxi Province, China.

摘要:

Quantum key distribution enables unconditionally secure key distribution between two legitimate users. The information-theoretic security is guaranteed by the fundamental laws of quantum physics. Initially, the quantum key distribution protocol was proposed based on the qubits. Later on, it was found that quantum continuous variables can also be exploited for this target. The continuous variable quantum key distribution can build upon standard telecommunication technology and exhibits a higher secret key rate per pulse at a relatively short distance due to the possibility of encoding more than 1 bit per pulse. In this article, we review the current status of the continuous variable quantum key distribution research, including its basic principle, experimental implementations, security and future directions; the experimental progress in this field made by our group is also presented.

关键词: quantum key distribution, continuous variable, quantum optics, quantum communication

Abstract:

Quantum key distribution enables unconditionally secure key distribution between two legitimate users. The information-theoretic security is guaranteed by the fundamental laws of quantum physics. Initially, the quantum key distribution protocol was proposed based on the qubits. Later on, it was found that quantum continuous variables can also be exploited for this target. The continuous variable quantum key distribution can build upon standard telecommunication technology and exhibits a higher secret key rate per pulse at a relatively short distance due to the possibility of encoding more than 1 bit per pulse. In this article, we review the current status of the continuous variable quantum key distribution research, including its basic principle, experimental implementations, security and future directions; the experimental progress in this field made by our group is also presented.

Key words: quantum key distribution, continuous variable, quantum optics, quantum communication

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

  • 03.67.Dd
03.67.Hk (Quantum communication) 42.50.Ex (Optical implementations of quantum information processing and transfer)