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arXiv · 1410.2367

Genuine Multipartite Entanglement without Multipartite Correlations

Christian Schwemmer·Lukas Knips·Minh Cong Tran·Anna de Rosier·Wieslaw Laskowski·Tomasz Paterek·Harald Weinfurter
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Abstract

Non-classical correlations between measurement results make entanglement the essence of quantum physics and the main resource for quantum information applications. Surprisingly, there are $n$-particle states which do not exhibit $n$-partite correlations at all but still are genuinely $n$-partite entangled. We introduce a general construction principle for such states, implement them in a multiphoton experiment and analyze their properties in detail. Remarkably, even without $n$-partite correlations, these states do violate Bell inequalities showing that there is no classical, i.e., local realistic model describing their properties.

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Christian Schwemmer, Lukas Knips, Minh Cong Tran, Anna de Rosier, Wieslaw Laskowski, Tomasz Paterek, Harald Weinfurter. 2015-05-19. Genuine Multipartite Entanglement without Multipartite Correlations. https://doi.org/10.1103/physrevlett.114.180501

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