Quantum heat engine based on photon-assisted Cooper pair tunneling

被引：91

作者：

Hofer, Patrick P. ^{[1
,2
]}

Souquet, J. -R. ^{[1
]}

Clerk, A. A. ^{[1
]}

机构：

[1] McGill Univ, Dept Phys, 3600 Rue Univ, Montreal, PQ H3A 2T8, Canada

[2] Univ Geneva, Dept Phys Theor, CH-1211 Geneva, Switzerland

来源：

PHYSICAL REVIEW B | 2016年 / 93卷 / 04期

基金：

加拿大自然科学与工程研究理事会;

关键词：

JOSEPHSON CURRENTS; ENERGY; EFFICIENCY; MICROWAVES;

D O I：

10.1103/PhysRevB.93.041418

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We propose and analyze a simple mesoscopic quantum heat engine that exhibits both high power and high efficiency. The system consists of a biased Josephson junction coupled to two microwave cavities, with each cavity coupled to a thermal bath. Resonant Cooper pair tunneling occurs with the exchange of photons between cavities, and a temperature difference between the baths can naturally lead to a current against the voltage, and hence work. As a consequence of the unique properties of Cooper-pair tunneling, the heat current is completely separated from the charge current. This combined with the strong energy selectivity of the process leads to an extremely high efficiency.

引用

页数：5

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