Device-independent witnesses of genuine multipartite entanglement

Jean Daniel Bancal, Nicolas Gisin, Yeong Cherng Liang, Stefano Pironio

研究成果: Article同行評審

157 引文 斯高帕斯(Scopus)

摘要

We consider the problem of determining whether genuine multipartite entanglement was produced in an experiment, without relying on a characterization of the systems observed or of the measurements performed. We present an n-partite inequality that is satisfied by all correlations produced by measurements on biseparable quantum states, but which can be violated by n-partite entangled states, such as Greenberger-Horne-Zeilinger states. In contrast to traditional entanglement witnesses, the violation of this inequality implies that the state is not biseparable independently of the Hilbert space dimension and of the measured operators. Violation of this inequality does not imply, however, genuine multipartite nonlocality. We show more generically how the problem of identifying genuine tripartite entanglement in a device-independent way can be addressed through semidefinite programming.

原文English
文章編號250404
期刊Physical review letters
106
發行號25
DOIs
出版狀態Published - 2011 六月 24

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)

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