Probability representation of spin states and inequalities for unitary matrices

被引:6
作者
Man'ko, M. A. [1 ]
机构
[1] RAS, PN Lebedev Phys Inst, Moscow 117901, Russia
基金
俄罗斯基础研究基金会;
关键词
entanglement; tomographic probability; Bell's inequality; entropic uncertainty relation; DENSITY-MATRIX; QUANTUM; TOMOGRAPHY; CRITERION; ENTROPY; TERMS;
D O I
10.1007/s11232-011-0080-4
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We review the probability representation of spin states described by probability distributions (tomograms). We use the relation of a tomogram to unitary group elements to obtain some inequalities for unitary matrices. We present the Cirel'son bound and the entropic inequalities for entangled spin states in the form of relations for functions on the unitary group.
引用
收藏
页码:985 / 993
页数:9
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