Observable entanglement measure for mixed quantum states

被引：141
|
作者：
Mintert, Florian
Buchleitner, Andreas
机构：
[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[2] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 14期
关键词：
D O I：
10.1103/PhysRevLett.98.140505
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We quantify an unknown mixed quantum state's entanglement by suitable, local parity measurements on its twofold copy. The associated observable qualifies as a generalized entanglement witness.
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收藏
页数：3
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