Centre for Theoretical Atomic, Molecular and Optical Physics, Queen's University Belfast, Belfast BT7 1NN, United Kingdom.
Phys Rev E. 2019 Feb;99(2-1):022110. doi: 10.1103/PhysRevE.99.022110.
We consider a finite-time Otto engine operating on a quantum harmonic oscillator and driven by shortcut-to-adiabaticity (STA) techniques to speed up its cycle. We study its efficiency and power when internal friction, time-averaged work, and work fluctuations are used as quantitative figures of merit, showing that time-averaged efficiency and power are useful cost functions for the characterization of the performance of the engine. We then use the minimum allowed time for validity of STA protocol relation to establish a physically relevant bound to the efficiency at maximum power of the STA-driven cycle.
我们考虑了一个在量子谐振子上运行的有限时间奥托发动机，并通过捷径绝热（STA）技术来加速其循环。当内部摩擦、平均功和功涨落被用作定量的性能指标时，我们研究了它的效率和功率，表明平均效率和功率是描述发动机性能的有用成本函数。然后，我们使用STA 协议关系的最小有效时间来建立一个物理相关的限制，以确定 STA 驱动循环的最大功率效率。
