论文标题
驱动量子点中通量的时间演变
Temporal evolution of fluxes in driven quantum dots
论文作者
论文摘要
驱动的介观系统是最近引起极大兴趣的话题。在驱动的单位量子点的系统中研究了通量（粒子和能量）的时间演化。在非常低的储层温度$ t \ rightarrow 0 $和两个储层的常见化学电位上，我们以非常简单的形式为时间依赖的粒子和能量通量提供了分析表达式。除这些通量外，还研究了由于存在依赖时间驱动器而导致的点占用和系统中产生的功率的行为。重要的是，对于驱动器的频率非常低，可以找到向导线的定向能量。将频率从低至中心增加，人们发现能量流的方向变化，具体取决于时间。这些结果也可以通过实验验证。
Driven mesoscopic system is a topic of great recent interest. The temporal evolution of the fluxes(particle and energy) are studied in a system of a driven single level quantum dot. At a very low reservoir temperature $T\rightarrow 0$ and for common chemical potentials of the two reservoirs, we have presented analytical expressions for time dependent particle and energy fluxes in a very simple form. Apart from these fluxes, the behavior of the dot occupation and the power developed in the system due to the presence of the time dependent drive are also being studied. Importantly, for a very low frequency of the drive, one finds a directed energy flow towards the leads. Increasing the frequency from low to medium, one finds change in the direction of the energy flow depending on the time. These results can also be verified experimentally.
