2014.07.23 15:48
실적년도 | 2012년 |
---|---|
논문구분 | 국외 |
총저자 | Kil-Chan Ha, Seung-Hyeok Kye |
학술지명 | Physical Review A - Atomic, Molecular, and Optical Physics |
권(Vol.) | 86 |
호(No.) | 3 |
게재년월 | 2012년 9월 |
Impact Factor | |
SCI 등재 | SCI |
비고 |
We examine various notions related to the optimality for entanglement witnesses arising from Choi-type positive linear maps. We found examples of optimal entanglement witnesses which are nondecomposable but are not "nondecomposable optimal entanglement witnesses" in the sense of Lewenstein, Kraus, Cirac, and Horodecki. We suggest using the terms PPTES witness and optimal PPTES witness in place of "nondecomposable entanglement witness" and "nondecomposable optimal entanglement witnesses" in order to avoid possible confusion. Here, PPTES refers entangled states with positive partial transposes. We also found examples of nonextremal optimal entanglement witnesses which are indecomposable.
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