论文标题
关于在爱因斯坦 - 波多尔斯基 - 罗森场景中表征组合
On characterising assemblages in Einstein-Podolsky-Rosen scenarios
论文作者
论文摘要
表征非古典量子现象不仅从基本角度来看至关重要，而且还可以更好地了解其信息处理和通信任务的能力。在这项工作中，我们专注于探索爱因斯坦 - 波多尔斯基 - 罗森 - 罗森推论（又称转向）的表征：当贝尔场景中的一个或多个派对具有量子理论所描述的系统和测量时，而不是被视为黑匣子时，就会表现出非经典性的签名。我们提出了一种表征一种从相关性中表征共同原因组合的方法，当受信任方在其实验中所占的层次进行层压完整的测量时，并讨论了这种方法的优势和挑战。在此框架内，我们表明所谓的几乎量子组合满足了宏观非上下文性的原理，并证明了几乎量子相关的子集在这种方法中几乎恢复了几乎量子组合。
Characterising non-classical quantum phenomena is crucial not only from a fundamental perspective, but also to better understand its capabilities for information processing and communication tasks. In this work, we focus on exploring the characterisation of Einstein-Podolsky-Rosen inference (a.k.a. steering): a signature of non-classicality manifested when one or more parties in a Bell scenario have their systems and measurements described by quantum theory, rather than being treated as black boxes. We propose a way of characterising common-cause assemblages from the correlations that arise when the trusted party performs tomographically-complete measurements on their share of the experiment, and discuss the advantages and challenges of this approach. Within this framework, we show that so-called almost quantum assemblages satisfy the principle of macroscopic noncontextuality, and demonstrate that a subset of almost quantum correlations recover almost quantum assemblages in this approach.
