Experimental test of genuine multipartite nonlocality under the no-signalling principle.
Experimental test of genuine multipartite nonlocality under the no-signalling principle.
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无信号原理下真实多方非局域性的实验检验
DOI：
10.1038/srep39327
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发表时间：
2016-12-20
影响因子：
4.6
通讯作者：
Guo GC
中科院分区：
文献类型：
--
作者：
Zhang C;Zhang CJ;Huang YF;Hou ZB;Liu BH;Li CF;Guo GC
真正的多体非定域性（GMN）被认为是多体量子关联的最强形式。然而，存在不能违反从GMN的标准定义导出的Svetlichny不等式的状态，即使它们具有GMN性质。原因是GMN的标准定义允许允许各方之间信令的相关性，这与操作定义不一致。在这里，我们第一次提出了一个实验测试的GMN在无信号的情况下，与三光子纯态|和噪声W态。实验结果表明，这些状态不能违反Svetlichny不等式。然而，我们的结果也表明，他们确实违反了一个新的不等式，该不等式是基于无信号原理从GMN的定义中推导出来的，即，这些状态可以在无信令的要求下表现出GMN。我们的研究结果将有助于广义相对论在量子通信和量子计算中的研究和应用。
Genuine multipartite nonlocality (GMN) has been recognized as the strongest form of multipartite quantum correlation. However, there exist states that cannot violate the Svetlichny inequality derived from the standard definition of GMN, even though they possess GMN properties. The reason is that the standard definition of GMN allows correlations that permit signalling among parties, which is inconsistent with an operational definition. Here, for the first time, we present an experimental test of GMN in the no-signalling scenario, with a three-photon pure state |ψs> and a noisy W state. The experimental results show that these states cannot violate the Svetlichny inequality. However, our results also demonstrate that they do violate a new inequality derived from the definition of GMN based on the no-signalling principle, i.e., these states can exhibit GMN under the requirement of no-signalling. Our results will be useful for the study and applications of GMN in quantum communications and quantum computation.
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影响因子：
8.6
作者：
ASPECT, A;GRANGIER, P;ROGER, G
通讯作者：
ROGER, G
影响因子：
44.1
作者：
Brunner, Nicolas;Cavalcanti, Daniel;Wehner, Stephanie
通讯作者：
Wehner, Stephanie
影响因子：
8.6
作者：
Bancal, Jean-Daniel;Brunner, Nicolas;Liang, Yeong-Cherng
通讯作者：
Liang, Yeong-Cherng
影响因子：
8.6
作者：
Masanes, Lluis
通讯作者：
Masanes, Lluis
影响因子：
8.6
作者：
He, Q. Y.;Reid, M. D.
通讯作者：
Reid, M. D.