论文标题
相关性和不一致：非局部相关性的可计算量度
Correlance and Discordance: Computable Measures of Nonlocal Correlation
论文作者
论文摘要
我们提出了离散多部分量子系统的非局部相关性的六个新度量；相关性，统计，可能性，强烈不一致，不一致和对角线不一致。相关性衡量所有非局部相关性（甚至绑定的纠缠），并且对于所有纯状态和混合状态都是可计算的。统计和概率尚不可计算，而是激励着强烈的不一致（对于超出严格的经典状态可以实现的非局部相关性），不一致（衡量所有非本地相关性的量子状态中的所有非本地相关性）和斜差异（对于迪角态状态中的非局限性相关性），所有这些都是为了对所有这些态度进行计算的，所有这些都可以计算出所有这些。我们讨论了经典性的相关性和概念的类型，并比较了相关性，强烈的不和谐和与量子不一致的不一致。我们还定义了对角线相关性，以处理严格的经典概率分布，从而为功能强大的工具提供了广泛的应用程序。
We present six new measures of nonlocal correlation for discrete multipartite quantum systems; correlance, statance, probablance, strong discordance, discordance, and diagonal discordance. The correlance measures all nonlocal correlation (even bound entanglement), and is exactly computable for all pure and mixed states. Statance and probablance are not yet computable, but motivate the strong discordance (for nonlocal correlation beyond that achievable by a strictly classical state), discordance (a measure of all nonlocal correlation in distinguishably quantum states), and diagonal discordance (for nonlocal correlation in diagonal states), all of which are exactly computable for all states. We discuss types of correlation and notions of classicality, and compare correlance, strong discordance, and discordance to quantum discord. We also define diagonal correlance to handle strictly classical probability distributions, providing a powerful tool with wide-ranging applications.
