中文题名: | 基于半正定规划的量子非对称四态协议成码率计算与分析 |
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保密级别: | 公开 |
论文语种: | 中文 |
学科代码: | 070101 |
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学生类型: | 学士 |
学位: | 理学学士 |
学位年度: | 2022 |
学校: | 北京师范大学 |
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提交日期: | 2022-06-26 |
答辩日期: | 2022-05-11 |
外文题名: | Calculation and Analysis of Secret Key Rate of Quantum Asymmetric Four-state Protocol Based on Semi-Positive Definite Programming |
中文关键词: | |
外文关键词: | Quantum Key Distribution ; BB84 protocol ; secret key rate ; semi-positive definite programming |
中文摘要: |
在量子通信中,量子密钥分发通过量子力学的特性保证了通信安全性。1984年,Bernnett和Brassard提出了第一个量子密钥分发协议,后被称为BB84协议。在实际中,设备缺陷可能会导致我们制备的量子态跟理想假设有偏差,从而影响协议的安全性。成码率是衡量量子通信协议安全性的重要标准。早期对协议的安全性分析主要采取解析方法,只能分析在窃听者特定攻击下的成码率;而近年出现了一种利用半正定规划计算成码率的数值方法,可以考虑到窃听者的所有攻击,而且能得到更紧的成码率下界。本文主要用上述数值方法对设备误差进行分析,推导出了在设备误差下成码率的数值计算方法,并对设备误差的情况进行了模拟计算,分析了两种不同误差导致的协议安全性的影响。
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外文摘要: |
In quantum communication, quantum key distribution guarantees the communication security by the properties of quantum mechanics. In 1984, Bernnett and Brassard proposed the first quantum key distribution protocol, later known as the BB84 protocol. In practice, the lack of fine equipment may cause our prepared quantum states to deviate from the ideal assumptions, thus affecting the security of the protocol. The secret key rate is an important criterion to measure the security of quantum communication protocols. In the early days, the security analysis of protocols mainly adopted the analytical method, which can only analyze key rate under the specific attacks of eavesdroppers; however, in recent years, a numerical method of calculating key rate using semi-positive definite programming has emerged, which can take into account all the attacks of eavesdroppers and can obtain more effective code rate results. In this thesis, we mainly use the above numerical method to analyze the device error, derive the numerical calculation method of the code rate under the device error, simulate the case of the device error, and analyze the impact of the protocol security caused by two different errors.
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参考文献总数: | 15 |
作者简介: | 高艺炜 北京师范大学数学科学学院 |
插图总数: | 6 |
插表总数: | 0 |
馆藏号: | 本070101/22168 |
开放日期: | 2023-06-26 |