Thermodynamics of Weakly Measured Quantum Systems

被引：56

作者：

Alonso, Jose Joaquin ^{[1
]}

Lutz, Eric ^{[1
]}

Romito, Alessandro ^{[2
]}

机构：

[1] Univ Erlangen Nurnberg, Dept Phys, D-91058 Erlangen, Germany

[2] FU Berlin, Dahlem Ctr Complex Quantum Syst, D-14195 Berlin, Germany

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 116卷 / 08期

关键词：

FLUCTUATIONS; WORK;

D O I：

10.1103/PhysRevLett.116.080403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider continuously monitored quantum systems and introduce definitions of work and heat along individual quantum trajectories that are valid for coherent superposition of energy eigenstates. We use these quantities to extend the first and second laws of stochastic thermodynamics to the quantum domain. We illustrate our results with the case of a weakly measured driven two-level system and show how to distinguish between quantum work and heat contributions. We finally employ quantum feedback control to suppress detector backaction and determine the work statistics.

引用

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