| 基于纠缠的BB84协议仿真研究 |
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| 引用本文： | 师瑞娟,朱畅华,陈南,裴昌幸. 基于纠缠的BB84协议仿真研究[J]. 计算机仿真, 2008, 25(6) |
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| 作者姓名： | 师瑞娟 朱畅华 陈南 裴昌幸 |
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| 作者单位： | 西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西,西安,710071;西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西,西安,710071;西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西,西安,710071;西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西,西安,710071 |
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| 摘 要： | 将传统的量子密钥分发协议与纠缠光子对的纠缠特性相结合,提出了一种改进的BB84协议--基于纠缠的BB84协议.为了考察该协议的可行性,利用量子计算语言分别针对协议的正确性和安全性进行了仿真验证,并进一步考察衰落信道对协议工作的影响.仿真结果显示:理想情况下,协议安全工作时密钥生成效率为14/30,接近理论值50%;在存在第三方窃听时,其密钥生成效率仅为5/30,远远小于50%,由此通信双方可以判断出第三方窃听存在.由于信道衰落的影响,实际密钥生成效率远远低于理论值.得出结论:基于纠缠的BB84协议也是绝对安全可靠、切实可行的量子密钥分发协议;为提高密钥生成效率,应尽量减小信道衰落.最后,对协议的应用进行了展望.
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| 关 键 词： | 量子密钥分发协议 量子计算语言 纠缠光子对 |
Performance Analysis of Entangled Photon Pairs-based BB84 Protocol by Simulation |
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| SHI Rui-juan,ZHU Chang-hua,CHEN Nan,PEI Chang-xing. Performance Analysis of Entangled Photon Pairs-based BB84 Protocol by Simulation[J]. Computer Simulation, 2008, 25(6) |
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| Authors: | SHI Rui-juan ZHU Chang-hua CHEN Nan PEI Chang-xing |
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| Affiliation: | SHI Rui-juan,ZHU Chang-hua,CHEN Nan,PEI Chang-xing(National Key Lab. of Integrated Services Networks,Xidian Univ.,Xi'an Shanxi 710071,China) |
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| Abstract: | The traditional quantum key distribution protocol was combined with the entanglement of the entangled photon pairs, and an improved BB84 protocol, the entangled photon pairs-based BB84 protocol, was put forward. In order to examine the feasibility of the improved protocol, the paper simulated its validity and security by using the quantum computation language (QCL).And the effect of channel attenuation on the protocol was taken into account. The result of the simulation shows that: in an ideal way, the effi... |
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| Keywords: | Quantum key distribution protocol Quantum computation language Entangled photon pair |
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