论文标题
同步观察铃铛非局部性和依赖状态的Kochen-Specker上下文
Synchronous observation of Bell nonlocality and state-dependent Kochen-Specker contextuality
论文作者
论文摘要
贝尔非局部性和科钦 - 雪橇上下文性是量子理论的两个显着的非经典特征，与在量子系统上执行的测量结果之间的强烈相关性有关。这两种现象都可以通过违反某些不平等现象来见证，其中最简单，最重要的是Clauser-Horne shormony-Holt（CHSH）和Klyachko-Can-Can-binicioǧlu-Shumovski（KCBS），分别用于Bell nonlocality和Kochen-Specker specker specker的背景。已经表明，使用对铃铛场景的最常见解释，量子系统不能同时侵犯这两种不平等，从而表明这两个现象之间是一夫一妻制的。在这封信中，我们表明，对CHSH和KCB的不平等的共同考虑自然要求采用所谓的广义钟场景，与先前的结果相反，该场景允许共同违反它们。因此，光子实验测试了对CHSH和KCB不平等的同步违规。我们的结果与理论预测一致，从而提供了实验性证明，证明了最简单的情况下，贝尔非局部性和科钦 - 雪茄背景性的共存，并为量子系统的非分类特征提供了新的探索。
Bell nonlocality and Kochen-Specker contextuality are two remarkable nonclassical features of quantum theory, related to strong correlations between outcomes of measurements performed on quantum systems. Both phenomena can be witnessed by the violation of certain inequalities, the simplest and most important of which are the Clauser-Horne-Shimony-Holt (CHSH) and the Klyachko-Can-Binicioǧlu-Shumovski (KCBS), for Bell nonlocality and Kochen-Specker contextuality, respectively. It has been shown that, using the most common interpretation of Bell scenarios, quantum systems cannot violate both inequalities concomitantly, thus suggesting a monogamous relation between the two phenomena. In this Letter, we show that the joint consideration of the CHSH and KCBS inequalities naturally calls for the so-called generalized Bell scenarios, which, contrary to the previous results, allows for joint violation of them. A photonic experiment thus tests the synchronous violation of both CHSH and KCBS inequalities. Our results agree with the theoretical predictions, thereby providing experimental proof of the coexistence of Bell nonlocality and Kochen-Specker contextuality in the simplest scenario, and shed new light for further explorations of nonclassical features of quantum systems.
