论文标题
通过非古质性的几何测量来识别量子相变
Identifying quantum phase transitions via geometric measures of nonclassicality
论文作者
论文摘要
在本文中，我们为使用非经典性的几何测量作为识别量子相变的一般工具提供了理论支持。我们认为，在任何几何量度的非古典措施的敏感性中的差异是在任意温度下识别相变的足够条件。这就确定了在任何量子资源理论中，非经典性的几何测量是研究量子系统中相变的通用工具。在零温度下，我们表明量子相干性的几何测量对于识别一级量子相变特别有用，并且可以是采用量子相关性测量方法的其他方法的特别强大替代方法。
In this article, we provide theoretical support for the use of geometric measures of nonclassicality as a general tool to identify quantum phase transitions. We argue that divergences in the susceptibility of any geometric measure of nonclassicality are sufficient conditions to identify phase transitions at arbitrary temperature. This establishes that geometric measures of nonclassicality, in any quantum resource theory, are generic tools to investigate phase transitions in quantum systems. At zero temperature, we show that geometric measures of quantum coherence are especially useful for identifying first order quantum phase transitions, and can be a particularly robust alternative to other approaches employing measures of quantum correlations.
