论文标题
经典随机系统中绝热泵送的快捷方式
Shortcuts to Adiabatic Pumping in Classical Stochastic Systems
论文作者
论文摘要
绝热抽水的特征是对泵电荷的几何贡献,即使没有偏见,也可能是非零的。但是,随着驾驶速度的提高,非绝热激发逐渐减少泵送电荷,从而限制了最大适用的驾驶频率。为了解决这个问题,我们在这里将快捷方式的概念扩展到绝热性,以构建一种控制方案,该协议能够超出绝热制度。我们的协议允许在驾驶频率下增加超过一个数量级的数量级,并且该方法在控制场的中度波动中也具有鲁棒性。我们提供了对控制方案的几何解释,并分析实施它的热力学成本。我们的发现可以使用当前的技术来实现,并有可能在量子点以及物理,化学和生物学的其他随机系统中快速泵送电荷或热量。
Adiabatic pumping is characterized by a geometric contribution to the pumped charge, which can be non-zero even in the absence of a bias. However, as the driving speed is increased, non-adiabatic excitations gradually reduce the pumped charge, thereby limiting the maximal applicable driving frequencies. To circumvent this problem, we here extend the concept of shortcuts to adiabaticity to construct a control protocol which enables geometric pumping well beyond the adiabatic regime. Our protocol allows for an increase, by more than an order of magnitude, in the driving frequencies, and the method is also robust against moderate fluctuations of the control field. We provide a geometric interpretation of the control protocol and analyze the thermodynamic cost of implementing it. Our findings can be realized using current technology and potentially enable fast pumping of charge or heat in quantum dots, as well as in other stochastic systems from physics, chemistry, and biology.