Entangled quantum Otto heat engines based on two-spin systems with the Dzyaloshinski-Moriya interaction

被引：29

作者：

Zhao, Li-Mei ^{[1
]}

Zhang, Guo-Feng ^{[1
]}

机构：

[1] Beihang Univ, Sch Phys & Nucl Energy Engn, Minist Educ, Key Lab Micronano Measurement Manipulat & Phys, Xueyuan Rd 37, Beijing 100191, Peoples R China

来源：

QUANTUM INFORMATION PROCESSING | 2017年 / 16卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Quantum heat engine; Spin-1/2; systems; Dzyaloshinski-Moriya interaction (DM); TELEPORTATION;

D O I：

10.1007/s11128-017-1665-0

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We construct an entangled quantum Otto engine based on spin-1/2 systems undergoing Dzyaloshinski-Moriya (DM) interaction within a varying magnetic field. We investigate the influence of the DM interaction on basic thermodynamic quantities, including heat transfer, work done, and efficiency and find that the DM interaction importantly influences the engine's thermodynamics. We obtain an expression for engine efficiency, finding it to yield the same efficiency for antiferromagnetic and ferromagnetic coupling. A new upper bound, nontrivially consistent with the second law of thermodynamics, is derived for engine efficiency in the case of non-zero DM interaction.

引用

页数：13

共 46 条

[1] THE ENTANGLED QUANTUM HEAT ENGINE IN THE VARIOUS HEISENBERG MODELS FOR A TWO-QUBIT SYSTEM [J].