Jong Kum Hyok, Ri Song Mi, Ri Chol Won
Department of Physics, Kim Il Sung University, Ryongnam Dong, Taesong District, Pyongyang, Democratic People's Republic of Korea.
J Phys Condens Matter. 2021 Jul 15;33(37). doi: 10.1088/1361-648X/ac0f2a.
We study the optimal output power and efficiency of the three-terminal quantum heat engine with Coulomb-coupled quantum-dots (CCQD). It has been well known that in the weak coupling regime, two kinds of dominant transport mechanisms are sequential tunneling and cotunneling processes in CCQD. What process becomes dominant, which can be controlled by several parameters such as temperature difference, bias voltage, Coulomb interaction and tunneling parameters, is one of the key problems to determine the performance of the heat engine. We show the parametric dependence of the output power and coefficient and find the optimal performance of this CCQD heat engine through genetic algorithm.
我们研究了具有库仑耦合量子点（CCQD）的三端量子热机的最佳输出功率和效率。众所周知，在弱耦合 regime 中，CCQD 中的两种主要传输机制是顺序隧穿和共隧穿过程。哪种过程占主导地位，可以由诸如温差、偏置电压、库仑相互作用和隧穿参数等几个参数控制，这是确定热机性能的关键问题之一。我们展示了输出功率和系数的参数依赖性，并通过遗传算法找到了这种 CCQD 热机的最佳性能。
