Back to Search
Start Over
Dynamical heat engines with non--Markovian reservoirs
- Source :
- Physical Review Research 4, 033233 (2022)
- Publication Year :
- 2022
-
Abstract
- We discuss whether, and under which conditions, it is possible to realize a heat engine simply by dynamically modulating the couplings between the quantum working medium and thermal reservoirs. For that purpose, we consider the paradigmatic model of a quantum harmonic oscillator, exposed to a minimal modulation, that is, a monochromatic driving of the coupling to only one of the thermal baths. We demonstrate, at any order in the system/bath coupling strength, that in this setup non--Markovianity of the bath is a necessary condition to obtain a heat engine. In addition, we identify suitable structured environments for the engine to approach the ideal Carnot efficiency. Our results open up new possibilities for the use of non--Markovian open quantum systems for the construction and optimization of quantum thermal machines.<br />Comment: Final revision as published on Physical Review Research: 19 pages, 7 color figures
- Subjects :
- Quantum Physics
Condensed Matter - Mesoscale and Nanoscale Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Physical Review Research 4, 033233 (2022)
- Publication Type :
- Report
- Accession number :
- edsarx.2205.01650
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevResearch.4.033233