北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2006, Vol. 29 ›› Issue (1): 128-130.doi: 10.13190/jbupt.200601.128.yangyg

• 研究报告 • 上一篇    

高效的量子密钥分配协议

杨宇光1,温巧燕1,朱甫臣2   

  1. 1.北京邮电大学 理学院,北京 100876
    2.现代通信国家重点实验室,成都 610041
  • 收稿日期:2005-01-12 出版日期:2006-02-28 发布日期:2006-02-28
  • 通讯作者: 杨宇光 E-mail:yangyang7357@sina.com
  • 作者简介:杨宇光(1976—),女,博士生,E-mail: yangyang7357@sina.com.
  • 基金资助:

    国家自然科学基金项目(60373059); 教育部高等学校博士点基金项目(20040013007)

Efficient Quantum Key Distribution Protocol

YANG Yu-guang1,WEN Qiao-yan1,ZHU Fu-chen2   

  1. 1.School of Sciences, Beijing University of Posts and Telecommunications, Beijing 100876, China
    2.State Key Laboratory of Modern Communications, Chengdu 610041, China
  • Received:2005-01-12 Online:2006-02-28 Published:2006-02-28
  • Contact: YANG Yu-guang E-mail:yangyang7357@sina.com

摘要:

为提高量子密钥分配协议的密钥生成率, 构造了一组两方三级系统的完备正交归一化基. 利用该正交归一化基和交换粒子之间的纠缠提出了一种量子密钥分配协议. 三级可以推广到多级,利用粒子之间的纠缠交换和多级密钥分配可以极大地提高检测窃听的效率、密钥生成率以及信息容量.

关键词: 量子密钥分配, 纠缠交换, 正交归一化基

Abstract:

In order to improve the key generation rate of the quantum key distribution protocols, a perfect complete orthogonal basis of the bipartite three-level system was constructed. By using this basis and swapping the entanglement between the particles, a quantum key distribution protocol was presented. Therefore, a three-level can be generalized to multi-level. Using entanglement swapping between the particles and multi-level key distribution, it can significantly improve the efficiency of the detection of eavesdropping and the key generation rate and the information flux.

Key words: quantum key distribution, entanglement swapping, orthonormal basis

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