A complete criterion for separability detection

Miguel Navascues, Masaki Owari, Martin B. Plenio

Research output: Contribution to journalArticle (Academic Journal)peer-review

20 Citations (Scopus)


Using new results on the separability properties of bosonic systems, we provide a new complete criterion for separability. This criterion aims at characterizing the set of separable states from the inside by means of a sequence of efficiently solvable semidefinite programs. We apply this method to derive arbitrarily good approximations to the optimal measure-and-prepare strategy in generic state estimation problems. Finally, we report its performance in combination with the criterion developed by Doherty et al. [1] for the calculation of the entanglement robustness of a relevant family of quantum states whose separability properties were unknown.
Original languageUndefined/Unknown
JournalPhysical Review Letters
Publication statusPublished - 15 Jun 2009


  • quant-ph

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