期刊
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL
卷 33, 期 24, 页码 4427-4436出版社
IOP PUBLISHING LTD
DOI: 10.1088/0305-4470/33/24/302
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A cyclic thermodynamic heat engine runs most efficiently if it is reversible. Carnot constructed such a reversible heat engine by combining adiabatic and isothermal processes for a system containing an ideal gas. Here, we present an example of a cyclic engine based on a single quantum mechanical particle confined to a potential well. The efficiency of this engine is shown to equal the Carnot efficiency because quantum dynamics is reversible. The quantum heat engine has a cycle consisting of adiabatic and isothermal quantum processes that are close analogues of the corresponding classical processes.
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