论文标题
可本质的量子相干性
Localizable quantum coherence
论文作者
论文摘要
连贯性是量子力学中的一个基本概念，相对于参考基础定义。因此，它不一定揭示相互作用的局部性，也不一定会考虑复合量子系统中的可访问操作。在本文中，我们提出了一个可本质连贯性的概念，因为可以通过衡量或仅通过忽略其余的来存储在特定子系统中的连贯性。我们检查了它的扩散，其在希尔伯特空间中的平均特性，并表明它可以应用于揭示量子多体理论感兴趣状态的真实空间结构，例如局部或拓扑状态。
Coherence is a fundamental notion in quantum mechanics, defined relative to a reference basis. As such, it does not necessarily reveal the locality of interactions nor takes into account the accessible operations in a composite quantum system. In this paper, we put forward a notion of localizable coherence as the coherence that can be stored in a particular subsystem, either by measuring or just by disregarding the rest. We examine its spreading, its average properties in the Hilbert space and show that it can be applied to reveal the real-space structure of states of interest in quantum many-body theory, for example, localized or topological states.
