发表机构
Fudan University; Shanghai Institute for Mathematics and Interdisciplinary Sciences (SIMIS)(复旦大学; 上海数学与交叉学科研究院)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
利用Sklar定理分离边缘与依赖结构,通过局部测量上下文的依赖核重构两量子比特态,并再现量子失谐。
AI 中文摘要
Sklar定理将联合分布的边缘分布与其依赖结构分离。我们将此观点应用于局部量子测量产生的Born统计。对于非乘积两量子比特态,所有局部二元投影测量上下文上的依赖核确定该态,至多存在离散的双自旋翻转歧义。相应的标量优化与量子总关联相结合,再现了全局量子失谐。
英文摘要
Sklar's theorem separates the marginals of a joint distribution from its dependence structure. We apply this viewpoint to Born statistics generated by local quantum measurements. For non-product two-qubit states, the dependence nuclei over all local binary projective measurement contexts determine the state up to at most a discrete double-spin-flip ambiguity. The corresponding scalar optimization, combined with the quantum total correlation, reproduces global quantum discord.
Comments18 pages