Experimental test of genuine multipartite nonlocality under the no-signalling principle.

ABSTRACT: 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

SUBMITTER: Zhang C 

PROVIDER: S-EPMC5171240 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature