Open AccessExperimental test of genuine multipartite nonlocality under the no-signalling principle
Author(s) -
Chao Zhang,
Chengjie Zhang,
YunFeng Huang,
Zhibo Hou,
Bi-Heng Liu,
ChuanFeng Li,
GuangCan Guo
Publication year - 2016
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/srep39327
Subject(s) - multipartite , quantum nonlocality , signalling , inequality , computer science , quantum , computation , state (computer science) , quantum state , mathematics , quantum mechanics , physics , mathematical economics , algorithm , quantum entanglement , mathematical analysis
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 | ψ s 〉 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.