Role of the superposition principle for enhancing the efficiency of the quantum-mechanical Carnot engine

Details Role of the superposition principle for enhancing the efficiency of the quantum-mechanical Carnot engine Role of the superposition principle for enhancing the efficiency of the quantum-mechanical Carnot engine

2012-01-03

arxiv.org/abs/1201.0688v1

Physical Review E 85, 011104 (2012)

Physics

Condensed Matter

Statistical Mechanics

18 pages, 2 figures

Scientific paper

A role of the superposition principle is discussed for the quantum-mechanical Carnot engine introduced by Bender, Brody, and Meister [J. Phys. A 33, 4427 (2000)]. It is shown that the efficiency of the engine can be enhanced by superposition of quantum states. A finite-time process is also discussed, and the condition of the maximum power output is presented. Interestingly, the efficiency at the maximum power is lower than that without superposition.

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