Matches in SemOpenAlex for { <https://semopenalex.org/work/W1995016329> ?p ?o ?g. }
- W1995016329 abstract "We provide a class of indecomposable entanglement witnesses. In $4ifmmodetimeselsetexttimesfi{}4$ case, it reproduces the well-known Breuer-Hall witness. We prove that these witnesses are optimal and atomic, i.e., they are able to detect the ``weakest'' quantum entanglement encoded into states with positive partial transposition. Equivalently, we provide a construction of indecomposable atomic maps in the algebra of $2kifmmodetimeselsetexttimesfi{}2k$ complex matrices. It is shown that their structural physical approximations give rise to entanglement breaking channels. This result supports recent conjecture by Korbicz et al. [Phys. Rev. A 78, 062105 (2008)]." @default.
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- W1995016329 date "2009-12-07" @default.
- W1995016329 modified "2023-10-16" @default.
- W1995016329 title "Constructing optimal entanglement witnesses" @default.
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- W1995016329 doi "https://doi.org/10.1103/physreva.80.062314" @default.
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