CONSTRUCTING MULTIPARTITE ENTANGLEMENT WITNESSES

被引：0
|
作者：
Michalski, Milosz [1 ]
机构：
[1] Nicolaus Copernicus Univ, Inst Phys, Grudziadzka 5, PL-87100 Torun, Poland
来源：
QUANTUM BIO-INFORMATICS IV: FROM QUANTUM INFORMATION TO BIO-INFORMATICS | 2011年 / 28卷
关键词：
Multipartite entanglement; entanglement witness; quantum spin chains; Heisenberg models; SEPARABILITY;
D O I：
暂无
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The method of transforming a hamiltonian of a composite quantum system into an entanglement witness, explored in an earlier papers, is extended to the multipartite case. The witness can be made not only to detect general entanglement but also to discriminate among its various multipartite types. Partial knowledge of the lowest part of energy spectrum is sufficient for approximate witness construction. As an example, we carry out analytic calculations with the hamiltonian of a 1-dimensional Heisenberg XXZ model.
引用
收藏
页码：237 / 254
页数：18
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