论文标题
腔介导相变的临界光 - 纠缠
Critical light-matter entanglement at cavity mediated phase transition
论文作者
论文摘要
我们考虑了一个光结合系统的模型，其中fermions（或玻色子）系统耦合到光子模式，该模式在物质自由度下驱动相变的光子模式。从简化的分析模型开始，我们表明，光与物质之间的纠缠在小和较大的耦合强度下消失，并显示了过渡的接近度的峰值。我们为特定模型（与固态和冷原子平台相关）执行数值模拟，并表明纠缠在过渡时显示了关键行为，并具有最大的敏感性，如最大纠缠能力所证明的那样。值得注意的是，轻质纠缠可直接访问关键指数，这表明了一种新的方法来测量无直物探针的通用性能。
We consider a model of a light-matter system, in which a system of fermions (or bosons) is coupled to a photonic mode that drives a phase transitions in the matter degrees of freedom. Starting from a simplified analytical model, we show that the entanglement between light and matter vanishes at small and large coupling strength, and shows a peak in the proximity of the transition. We perform numerical simulations for a specific model (relevant to both solid state and cold atom platforms), and show that the entanglement displays critical behavior at the transition, and features maximum susceptibility, as demonstrated by a maximal entanglement capacity. Remarkably, light-matter entanglement provides direct access to critical exponents, suggesting a novel approach to measure universal properties without direct matter probes.
