Thermal entanglement and efficiency of the quantum Otto cycle for the su(1,1) Tavis-Cummings system

被引：19

作者：

Chotorlishvili, Levan ^{[1
,3
]}

Toklikishvili, Zaza ^{[2
]}

Berakdar, Jamal ^{[1
]}

机构：

[1] Univ Halle Wittenberg, Inst Phys, D-06120 Halle, Germany

[2] Tbilisi State Univ, Dept Phys, GE-0128 Tbilisi, Georgia

[3] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL | 2011年 / 44卷 / 16期

关键词：

D O I：

10.1088/1751-8113/44/16/165303

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The influence of the dynamical Stark shift on the thermal entanglement and the efficiency of the quantum Otto cycle is studied for the su(1,1) Tavis-Cummings system. It is shown that the degree of the thermal entanglement becomes larger as the dynamical Stark shift increases. In contrast, the efficiency of the Otto cycle is degraded with an increase of the values of the dynamical Stark shift. Expressions for the efficiency coefficient are derived. Using those expressions, we identify the maximal efficiency of the quantum Otto cycle from the experimentally measured values of the dynamical Stark shift.

引用

页数：9

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