Efficiency at maximum power of a laser quantum heat engine enhanced by noise-induced coherence
Efficiency at maximum power of a laser quantum heat engine enhanced by noise-induced coherence
复制标题
通过噪声引起的相干性增强激光量子热机最大功率的效率
DOI：
10.1103/physreve.97.042120
复制
发表时间：
2018-04-13
影响因子：
2.4
通讯作者：
Cao, Jianshu
中科院分区：
文献类型：
--
作者：
Dorfman, Konstantin E.;Xu, Dazhi;Cao, Jianshu
量子相干已经在包括有机太阳能电池和固态器件在内的各种系统中得到了证明。在这篇文章中，我们报道了由最大功率效率决定的量子热机性能的上下界。我们基于正则三能级Scovil和Schulz-Dubois脉泽模型的预测强烈地依赖于热浴和冷浴的系统-浴耦合比，并且恢复了先前为卡诺引擎建立的理论界限。此外，在脉泽模型中引入第四能级可以提高最大功率及其效率，从而证明了量子相干在热力学和热机运行中的重要性，超出了经典极限。
Quantum coherence has been demonstrated in various systems including organic solar cells and solid state devices. In this article, we report the lower and upper bounds for the performance of quantum heat engines determined by the efficiency at maximum power. Our prediction based on the canonical three-level Scovil and Schulz-Dubois maser model strongly depends on the ratio of system-bath couplings for the hot and cold baths and recovers the theoretical bounds established previously for the Carnot engine. Further, introducing a fourth level to the maser model can enhance the maximal power and its efficiency, thus demonstrating the importance of quantum coherence in the thermodynamics and operation of the heat engines beyond the classical limit.