Entanglement witnesses and characterizing entanglement properties of some PPT states

被引：0
|
作者：
M. A. Jafarizadeh
N. Behzadi
Y. Akbari
机构：
[1] Tabriz University,Department of Theoretical Physics and Astrophysics
[2] Institute for Studies in Theoretical Physics and Mathematics,Department of Physics
[3] Research Institute for Fundamental Sciences,undefined
[4] Azarbaijan University of Tarbiat Moallem,undefined
来源：
The European Physical Journal D | 2009年 / 55卷
关键词：
03.67.Mn Entanglement measures, witnesses, and other characterizations; 03.65.Ud Entanglement and quantum nonlocality;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
On the basis of linear programming, new sets of entanglement witnesses (EWs) for 3⊗3 and 4⊗4 systems are constructed. In both cases, the constructed EWs correspond to the hyper-planes contacting, without intersecting, the related feasible regions at line segments and restricted planes respectively. Due to the special property of the contacting area between the hyper-planes and the feasible regions, the corresponding hyper-planes can be turned around the contacting area throughout a bounded interval and hence create an infinite number of EWs. As these EWs are able to detect entanglement of some PPT states, they are non-decomposable (nd-EWs).
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页码：197 / 203
页数：6
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