标题： 量子贝尔非定域性是纠缠 显示英文标题

标题： Quantum Bell Nonlocality is Entanglement

摘要： 贝尔非定域性描述了量子力学的一种表现，这种表现无法用任何局部隐变量模型来解释。其起源在于量子纠缠的本质，尽管理解非定域性与纠缠之间的精确关系一直是一个著名的开放问题。在本文中，我们通过开发一个动力学框架来解决这个问题，在这个框架中，量子贝尔非定域性作为一种特殊的纠缠形式出现，而两者都在局部操作和经典通信（LOCC）下统一为资源。我们的框架建立在量子过程的概念上，这些过程是抽象的量子信道，将固定时空区间内的元素进行映射。然后将纠缠识别为不能由LOCC生成的量子过程，而贝尔非定域性则是这些过程中具有瞬时输入输出延迟时间的子集。LOCC预处理在这个理论中是一组自然的自由操作，从而使得所有纠缠态都能激活某种形式的贝尔非定域性。此外，我们将CHSH见证从状态领域推广到纠缠量子测量领域，并提供了一种系统的方法来量化双粒子量子信道的贝尔非定域性。 显示英文摘要

摘要： Bell nonlocality describes a manifestation of quantum mechanics that cannot be explained by any local hidden variable model. Its origin lies in the nature of quantum entanglement, although understanding the precise relationship between nonlocality and entanglement has been a notorious open problem. In this paper, we resolve this problem by developing a dynamical framework in which quantum Bell nonlocality emerges as special form of entanglement, and both are unified as resources under local operations and classical communication (LOCC). Our framework is built on the notion of quantum processes, which are abstract quantum channels mapping elements between fixed intervals in space and time. Entanglement is then identified as a quantum process that cannot be generated by LOCC while Bell nonlocality is the subset of these processes that have an instantaneous input-output delay time. LOCC pre-processing is a natural set of free operations in this theory, thereby enabling all entangled states to activate some form of Bell nonlocality. In addition, we generalize the CHSH witnesses from the state domain to the domain of entangled quantum measurements, and provide a systematic method to quantify the Bell nonlocality of a bipartite quantum channel.