Witnessing genuine multipartite entanglement with positive maps

Marcus Huber, Ritabrata Sengupta

Research output: Contribution to journalArticleResearchpeer-review

32 Citations (Scopus)

Abstract

© 2014 American Physical Society. We derive a general framework that lifts any set of bipartite to multipartite entanglement witnesses and we show how positive maps can naturally be incorporated into this framework. We show that some previous approaches for multipartite entanglement detection are intimately connected to the witnesses derived from partial transposition and that such criteria can easily be outperformed in higher dimensions by nondecomposable maps. As an exemplary case we present a witness that is capable of detecting genuine multipartite entanglement in bound entangled states.
Original languageEnglish
Article number100501
JournalPhysical Review Letters
Volume113
Issue number10
DOIs
Publication statusPublished - 2 Sep 2014

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