Work and heat in quantum CNOT gate operations

被引：2

作者：

Liang, Xian-Ting ^{[1
]}

Cheng, Jiong ^{[1
]}

Zhang, Wen-Zhao ^{[1
]}

Leng, Xuan ^{[1
]}

机构：

[1] Ningbo Univ, Dept Phys, Ningbo 315211, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL D | 2021年 / 75卷 / 10期

基金：

中国国家自然科学基金;

关键词：

UNIVERSAL;

D O I：

10.1140/epjd/s10053-021-00270-w

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, we derive the work and heat for two kinds of quantum bipartite systems: a closed one and an open one according to the scheme suggested in Ref. (Weimer et al. in EPL 83:30008, 2008). Then the results are used to investigate the evolution of the work and heat in a quantum CNOT gate operations. It is shown that the heat and work conversion cannot be performed in the closed quantum CNOT gate operations. However, the open quantum CNOT gate can be used to perform the conversion of heat and work. If at the beginning, a spin with a large energy-level difference has a greater probability of being in a highly excited state than the other, then the CNOT gate will work as a quantum engine, and if it is initially in highly excited states with a smaller probability than the other, the gate will work as a quantum refrigerator. Graphic abstract

引用

页数：6

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