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Updated: Jun 12, 2026
14:58
Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
Published on: June 3, 2015
Quantum-dot Carnot engine at maximum power
Massimiliano Esposito1, Ryoichi Kawai, Katja Lindenberg
1Center for Nonlinear Phenomena and Complex Systems, Université Libre de Bruxelles, CP 231, Campus Plaine, B-1050 Brussels, Belgium.
Summary
This study analyzes the maximum power efficiency of quantum-dot Carnot heat engines. Results confirm universal coefficients and recover Curzon-Ahlborn efficiency under specific conditions.
Area of Science:
- Quantum thermodynamics
- Nanoscale heat engines
Background:
- Quantum dots offer unique platforms for studying thermodynamic processes.
- Carnot heat engines represent the theoretical limit of thermodynamic efficiency.
Purpose of the Study:
- To evaluate the efficiency at maximum power of a quantum-dot Carnot heat engine.
- To analyze the universal coefficients governing engine performance.
- To investigate the relationship between dissipation and efficiency.
Main Methods:
- Theoretical modeling of a quantum-dot Carnot heat engine.
- Analysis of coefficients at linear and quadratic order in temperature gradient.
- Examination of the weak dissipation limit.
Main Results:
- The universal values of performance coefficients were successfully reproduced.
- The engine's efficiency at maximum power was determined.
- Curzon-Ahlborn efficiency was recovered in the limit of weak dissipation.
Conclusions:
- Quantum-dot Carnot heat engines exhibit universal thermodynamic properties.
- The theoretical framework accurately describes engine performance.
- Dissipation plays a critical role in engine efficiency, aligning with established theories.
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