Geometric Phase of Two-Level Mixed State and Bloch Sphere Structure

被引：7

作者：

Fu, Guolan ^{[1
]}

Liu, Xiaoshan ^{[1
]}

Wang, Z. S. ^{[1
]}

机构：

[1] Jiangxi Normal Univ, Coll Phys & Commun Elect, Nanchang 33022, Peoples R China

来源：

INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2013年 / 52卷 / 09期

关键词：

Geometric phase; Mixed state; Bloch sphere;

D O I：

10.1007/s10773-013-1605-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Geometric phase of two-level mixed state is investigated by comparing our approach with kinematic one. The results show that in the kinematic one, the Berry phases emerge discontinuous points because of losing a physical contribution from one of two eigenstates of density matrix. In contrast, our approach is a smooth curve of initial angle, evolving time and decay rate because of the interference between the two eigenstates with the probability ensemble.

引用

页码：3132 / 3140

页数：9

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