A three-process quantum engine cycle consisting of a two-level system |
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| Authors: | CongJie Ou ZhiFu Huang BiHong Lin JinCan Chen |
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| Affiliation: | 1. College of Information Science and Engineering, Huaqiao University, Xiamen, 361021, China
2. Department of Physics, Xiamen University, Xiamen, 361005, China
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| Abstract: | Based on the thermodynamic properties of isoenergetic, adiabatic and isothermal quantum processes, it is shown that it is possible to combine the three processes into a quantum engine cycle. The efficiency of the three-process cycle can be derived and is dependent on the highest and lowest temperatures. The efficiency in some operation regions does not demonstrate a monotonically increasing function of the temperature difference. When the highest temperature of the cycle is larger than the critical temperature, which can be determined by the characteristics of the three-process cycle, a unique region where the efficiency decreased with the increase of the temperature difference exists. |
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| Keywords: | quantum engine isoenergetic process critical temperature |
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