论文标题
量子优雅的关节测量违反了双尾铃的不平等现象
Bilocal Bell inequalities violated by the quantum Elegant Joint Measurement
论文作者
论文摘要
网络铃实验引起了一种量子非局部性形式，从概念上讲，它超出了贝尔定理。我们在这里调查了最简单的网络，称为双向性方案。我们偏离了网络中心节点中钟状态测量的典型使用，而是引入了一个对称的ISO键入测量库，从而概括了所谓的优雅关节测量。这使我们报告了避开双向变量模型的耐噪声量子相关性。受这些量子相关性的启发，我们引入了网络铃的不平等现象，以实现双向性性方案，并表明它们承认易受噪声的量子违规。与以前关于网络铃不平等的研究相反，我们的不平等现象及其量子违规都不是基于标准的铃铛不平等和标准的量子非局部性。此外，我们通过提出一个简单的两级量子电路来实现实验实现的道路，以实现优雅的关节测量和我们的概括。
Network Bell experiments give rise to a form of quantum nonlocality that conceptually goes beyond Bell's theorem. We investigate here the simplest network, known as the bilocality scenario. We depart from the typical use of the Bell State Measurement in the network central node and instead introduce a family of symmetric iso-entangled measurement bases that generalise the so-called Elegant Joint Measurement. This leads us to report noise-tolerant quantum correlations that elude bilocal variable models. Inspired by these quantum correlations, we introduce network Bell inequalities for the bilocality scenario and show that they admit noise-tolerant quantum violations. In contrast to many previous studies of network Bell inequalities, neither our inequalities nor their quantum violations are based on standard Bell inequalities and standard quantum nonlocality. Moreover, we pave the way for an experimental realisation by presenting a simple two-qubit quantum circuit for the implementation of the Elegant Joint Measurement and our generalisation.
