标题： 相对论独立性非定域性限制的实验检验 显示英文标题

标题： Experimental Test of Nonlocality Limits from Relativistic Independence

摘要： 量子关联，如纠缠，代表了量子力学的特征特性，并对这门现代物理学支柱的解释提出了基本的问题和挑战。 尽管量子关联在许多量子技术任务中被广泛认为是实现量子优势的主要资源，但它们的完整定量描述以及支撑它们的公理基础仍在研究中。 先前的研究表明，非局域关联的起源基于捕捉（从量子形式主义之外）量子不确定性本质的原则。 特别是，最近引入的相对独立性原则产生了一个新的界限，将局部和非局部关联交织在一起。 在这里，我们通过在纠缠光子对上同时实现顺序和联合弱测量来测试这一界限，使得能够在不坍缩其状态的情况下，通过测量同一量子系统上的不相容可观测量，同时量化局部和非局部关联，这是一个在传统（投影）量子测量框架中通常被禁止的任务。 我们的结果证明了量子关联程度存在一个基本限制，揭示了不确定性在启用和平衡它们中的深刻作用。 显示英文摘要

摘要： Quantum correlations, like entanglement, represent the characteristic trait of quantum mechanics, and pose essential issues and challenges to the interpretation of this pillar of modern physics. Although quantum correlations are largely acknowledged as a major resource to achieve quantum advantage in many tasks of quantum technologies, their full quantitative description and the axiomatic basis underlying them are still under investigation. Previous works suggested that the origin of nonlocal correlations is grounded in principles capturing (from outside the quantum formalism) the essence of quantum uncertainty. In particular, the recently-introduced principle of Relativistic Independence gave rise to a new bound intertwining local and nonlocal correlations. Here we test such a bound by realizing together sequential and joint weak measurements on entangled photon pairs, allowing to simultaneously quantify both local and nonlocal correlations by measuring incompatible observables on the same quantum system without collapsing its state, a task typically forbidden in the traditional (projective) quantum measurement framework. Our results demonstrate the existence of a fundamental limit on the extent of quantum correlations, shedding light on the profound role of uncertainty in both enabling and balancing them.