Dissipative and stochastic geometric phase of a qubit within a canonical Langevin framework

被引：7

作者：

Bargueno, Pedro ^{[1
]}

Miret-Artes, Salvador ^{[2
]}

机构：

[1] Univ Complutense Madrid, Dept Fis Mat, E-28040 Madrid, Spain

[2] CSIC, Inst Fis Fundamental, E-28006 Madrid, Spain

来源：

PHYSICAL REVIEW A | 2013年 / 87卷 / 01期

关键词：

BERRY TOPOLOGICAL PHASE; HOLONOMY; SHIFTS;

D O I：

10.1103/PhysRevA.87.012125

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Dissipative and stochastic effects in the geometric phase of a qubit are taken into account using a geometrical description of the corresponding open-system dynamics within a canonical Langevin framework based on a Caldeira-Leggett-like Hamiltonian. By extending the Hopf fibration S-3 -> S-2 to include such effects, the exact geometric phase for a dissipative qubit is obtained, whereas numerical calculations are used to include finite-temperature effects on it. DOI: 10.1103/PhysRevA.87.012125

引用

页数：4

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