期刊
NEW JOURNAL OF PHYSICS
卷 19, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/aa6acb
关键词
quantum thermodynamics; Maxwell demon; superconducting devices
资金
- Marie Curie Intra European Fellowship within the 7th European Community Framework Programme through the project NeQuFlux [623085]
- Unicredit Bank
- Academy of Finland [272218]
- COST action MP1209 'Thermodynamics in the quantum regime'
- Centre for Quantum Engineering at Aalto University, CQE
- Academy of Finland (AKA) [272218, 272218] Funding Source: Academy of Finland (AKA)
A theory of feedback-controlled heat transport in quantum systems is presented. It is based on modelling heat engines as driven multipartite systems subject to projective quantum measurements and measurement-conditioned unitary evolutions. The theory unifies various results presented previously in the literature. Feedback control breaks time reversal invariance. This in turn results in the fluctuation relation not being obeyed. Its restoration occurs through appropriate accounting of the gain and use of information via measurements and feedback. We further illustrate an experimental proposal for the realisation of a Maxwell demon using superconducting circuits and single-photon on-chip calorimetry. A two-level qubit acts as a trap-door, which, conditioned on its state, is coupled to either a hot resistor or a cold one. The feedback mechanism alters the temperatures felt by the qubit and can result in an effective inversion of temperature gradient, where heat flows from cold to hot thanks to the gain and use of information.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据