| 基于差分相移键控协议的双向量子密钥分配系统研究 |
| |
| 引用本文： | 焦荣珍,冯晨旭.基于差分相移键控协议的双向量子密钥分配系统研究[J].中国物理 B,2008,17(2):685-688. |
| |
| 作者姓名： | 焦荣珍 冯晨旭 |
| |
| 作者单位： | 北京邮电大学理学院，北京 100876;北京邮电大学理学院，北京 100876 |
| |
| 基金项目： | 国家自然科学基金(批准号：60054402)资助的课题. |
| |
| 摘 要： | 采用差分相移键控(DPSK)协议分析了双向量子密钥分配(QKD)系统的性能，比较了BB84协议、BBM92协议和DPSK协议的安全通信速率与距离的关系，并对协议对抗一些攻击的安全性进行了分析，结果表明DPSK协议对长距离QKD系统非常实用，具有超过200 km的通信距离和较高的通信速率.
|
| 关 键 词： | 差分相移键控协议， 量子效率， 通信速率 |
Analysis of differential-phase-shift keying protocol for a two-way quantum-key-distribution system |
| |
| Jiao Rong-Zhen and Feng Chen-Xu.Analysis of differential-phase-shift keying protocol for a two-way quantum-key-distribution system[J].Chinese Physics B,2008,17(2):685-688. |
| |
| Authors: | Jiao Rong-Zhen and Feng Chen-Xu |
| |
| Abstract: | The performance of a two-way quantum-key-distribution (QKD) system are analyzed using the differential-phase-shift keying (DPSK) protocol. The comparison is based on the secure communication rate as a function of distance for three QKD protocols: the Bennett-Brassard 1984, the Bennett-Brassard-Mermin 1992, and the coherent differential-phase-shift keying protocols. We discussed the security of DPSK protocol against any type of individual photon splitting attack and concluded that the simple and efficient DPSK protocol allows for more than 200km of secure communication distance with high communication rates. |
| |
| Keywords: | differential-phase-shift keying protocol quantum efficiency communication rate |
|
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
