论文标题
使用驱动的schrödinger方程研究量子奥托热发动机
Study of quantum Otto heat engine using driven-dissipative Schrödinger equation
论文作者
论文摘要
由于设备的微型化，量子热发动机引起了很多关注。我们使用驱动的Schrödinger方程研究量子奥托热发动机的动力学。从不同的初始状态开始，我们模拟了内部能量，功率和热量转换效率的时间演变。在OTTO循环达到稳定之前，初始状态会影响这些热力学数量。在过渡期间，效率和功率可能高于或低于环稳态中的相应值。值得注意的是，效率可能会超过Otto限制，甚至是Carnot限制，并且功率可能远高于额定功率。效率异常是由于初始状态的能量引起的。因此，我们建议定期抽水可以采用类似的热水作用，但可以灵活地操纵。此外，我们提出了一种在单个储层中起作用的新量子发动机，将泵能量转换为机械工作。该操纵发动机可能可能应用于在没有较大温度差的微观环境中工作，例如体内生物组织。我们的协议有望建模新的量子引擎，具有适用性和可控性的优势。
The quantum heat engines have drawn much attention due to miniaturization of devices recently. We study the dynamics of the quantum Otto heat engine using the driven-dissipative Schrödinger equation. Starting from different initial states, we simulate the time evolutions of the internal energy, power and heat-work conversion efficiency. The initial state impacts on these thermodynamic quantities before the Otto cycle reaches stable. In the transition period, the efficiency and power may be higher or lower than the corresponding values in the cyclostationary state. Remarkably, the efficiency could surpass the Otto limit and even the Carnot limit and the power could be much higher than the rated power. The efficiency anomaly is due to the energy in the initial state. Thus, we suggest that periodically pumping could take the similar role of a hot bath but could be manipulated flexibly. Furthermore, we propose a new quantum engine working in a single reservoir to convert the pump energy into mechanical work. This manipulative engine could potentially be applied to working in the microenvironments without a large temperature difference, such as the biological tissues in vivo. Our protocol is expected to model a new quantum engine with the advantage of applicability and controllability.
