论文标题
真正的三方连贯性的量化和观察：基于经典光学的解决方案
Quantification and observation of genuine three-party coherence: A solution based on classical optics
论文作者
论文摘要
我们通过从经典光学器件中借用概念来介绍对波场（经典和量子）的真实三方纯状态相干性的量化。经典近距离光束的张量结构被证明与三分之三的量子状态相等。然后，将传统的基础独立的光学连贯性量称为极化程度，被确定为所需的定量两方相干度量。当适当概括时，在三个两党的连贯之间将得出一组基本的约束关系。约束关系可以被几何解释和可视化为四面体嵌套在相干立方体中。三方连贯性的度量是根据约束定义的。我们正在报告完成的实验测试，并确认限制以及在光学环境中对三方连贯性的测量。我们基于经典光学的方法还开辟了一种分析量子相干性的替代方法。
We introduce a quantification of genuine three-party pure-state coherence for wave fields, classical and quantum, by borrowing concepts from classical optics. The tensor structure of a classical paraxial light beam composed of three principle degrees of freedom is shown to be equivalent to that of a three-qubit quantum state. The traditional basis-independent optical coherence quantity called degree of polarization is then determined to be the desired quantitative two-party coherence measure. When appropriately generalized, a set of fundamental constraint relations is derived among three two-party coherences. The constraint relations can be geometrically interpreted and visualized as tetrahedra nested within a coherence cube. A measure of three-party coherence is defined based on the constraints. We are reporting completed experimental tests and confirmations of the constraints as well as measurement of three-party coherence in the optical context. Our approach based on classical optics also opens an alternative way to analyze quantum coherence.
