Miao Jian-Guo, Wu Chun-Wang, Wu Wei, Chen Ping-Xing
Interdisciplinary Center for Quantum Information, National University of Defense Technology, Changsha 410073, China.
Entropy (Basel). 2019 Jul 1;21(7):650. doi: 10.3390/e21070650.
A complete quantum cooling cycle may be a useful platform for studying quantum thermodynamics just as the quantum heat engine does. Entropy change is an important feature which can help us to investigate the thermodynamic properties of the single ion cooling process. Here, we analyze the entropy change of the ion and laser field in the single ion cooling cycle by generalizing the idea in Reference ( , , 043002) to a single ion system. Thermodynamic properties of the single ion cooling process are discussed and it is shown that the Second and Third Laws of Thermodynamics are still strictly held in the quantum cooling process. Our results suggest that quantum cooling cycles are also candidates for the investigation on quantum thermodynamics besides quantum heat engines.
一个完整的量子冷却循环可能是研究量子热力学的有用平台，就像量子热机一样。熵变是一个重要特征，它可以帮助我们研究单离子冷却过程的热力学性质。在这里，我们通过将参考文献（，，043002）中的思想推广到单离子系统，分析了单离子冷却循环中离子和激光场的熵变。讨论了单离子冷却过程的热力学性质，结果表明热力学第二和第三定律在量子冷却过程中仍然严格成立。我们的结果表明，除了量子热机之外，量子冷却循环也是研究量子热力学的候选对象。
