量化量子测量的内在随机性的量化
Gabriel Senno1,2, Thomas Strohm3, Antonio Acín1,4
1ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain.
Physical review letters
|October 13, 2023
概括
这项研究探讨了量子随机性和窃听. 我们发现她有一个窃听者.
科学领域:
- 量子信息理论就是量子信息理论.
- 量子测量理论是量子测量的理论.
- 量子力学的基础 量子力学的基础
背景情况:
- 量子力学在测量过程中表现出内在的随机性.
- 现实的量子系统涉及噪音,引入非内在的随机性.
- 窃听者 (Eve) 可以利用相关性来猜测量子测量结果.
研究的目的:
- 在一般化量子测量中调查窃听者的最大猜测概率.
- 分析经典与量子相关性对窃听策略的影响.
- 扩大对量子随机性在噪声和一般化测量的存在中的理解.
主要方法:
- 通过经典或量子相关性建模窃听.
- 对混合状态的概括测量进行分析.
- 在不同的相关策略下计算Eve的最大猜测概率.
主要成果:
- 伊娃的最大猜测概率取决于她的相关策略 (古典与量子).
- 这种依赖性特别出现在混合状态的一般化测量中.
- 这些发现与涉及投射测量或纯状态的场景不同.
结论:
- 当考虑现实的噪音和通用测量时,量子随机性的性质是微妙的.
- 窃听者的优势是,他们能够建立的相关性类型是敏感的.
- 这项工作澄清了量子信息任务中的经典和量子相关性之间的操作区别.
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