期刊
PHYSICAL REVIEW LETTERS
卷 124, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.124.040602
关键词
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资金
- Academy of Finland [296073]
- JSPS [JP17K05587, JP16H02211]
- Japan Society for the Promotion of Science [P19026]
- Centre for Quantum Engineering at Aalto University
- Austrian Science Fund (FWF) [P19026] Funding Source: Austrian Science Fund (FWF)
- Academy of Finland (AKA) [296073, 296073] Funding Source: Academy of Finland (AKA)
We develop a general framework to describe the thermodynamics of microscopic heat engines driven by arbitrary periodic temperature variations and modulations of a mechanical control parameter. Within the slow-driving regime, our approach leads to a universal trade-off relation between efficiency and power, which follows solely from geometric arguments and holds for any thermodynamically consistent microdynamics. Focusing on Lindblad dynamics, we derive a second bound showing that coherence as a genuine quantum effect inevitably reduces the performance of slow engine cycles regardless of the driving amplitudes. To show how our theory can be applied in practice, we work out a specific example, which lies within the range of current solid-state technologies.
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