Spectral properties of circulant positive maps: classical versus quantum

被引：0
|
作者：
Chruscinski, Dariusz [1 ]
机构：
[1] Nicolaus Copernicus Univ, Fac Phys Astron & Informat, Inst Phys, PL-87100 Torun, Poland
来源：
PHYSICA SCRIPTA | 2015年 / 90卷 / 07期
关键词：
positive maps; quantum channels; stochastic marices; ENTANGLEMENT; GEOMETRY; MATRIX;
D O I：
10.1088/0031-8949/90/7/074061
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A class of circulant stochastic matrices and positive maps in matrix algebras displaying circulant structure is analyzed. It is shown how the spectral properties of matrices and linear maps are related to positivity conditions. An interesting interplay between the classical and quantum case is revealed.
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页数：6
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