Entanglement criteria and nonlocality for multimode continuous-variable systems

Qingqing Sun, Hyunchul Nha, M. Suhail Zubairy

Research output: Contribution to journalArticle

25 Citations (Scopus)


We demonstrate how to efficiently derive a broad class of inequalities for entanglement detection in multimode continuous variable systems. The separability conditions are established from partial transposition (PT) in combination with several distinct necessary conditions for a quantum physical state, which include previously established inequalities as special cases. Remarkably, our method enables us to support Peres' conjecture to its full generality within the framework of Cavalcanti-Foster-Reid-Drummond multipartite Bell inequality that the nonlocality necessarily implies negative PT entangled states.

Original languageEnglish
Article number020101
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number2
Publication statusPublished - 31 Aug 2009

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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