Optimal performance of thermal machines is reached by suppressing friction. Friction in quantum thermodynamics results from fast driving schemes that generate nonadiabatic excitations. The far-from-equilibrium dynamics of quantum devices can be tailored by shortcuts to adiabaticity to suppress quantum friction. We experimentally demonstrate friction-free superadiabatic strokes with a trapped unitary Fermi gas as a working substance and establish the equivalence between the superadiabatic work and its adiabatic value.

图1 （A）实验装置简图（B）实验所采用的局域透热驱动的量子绝热捷径操控方案示意图

图2 量子热机绝热冲程的量子摩擦和对外做功的数据图。 A图数据表征绝热冲程的量子摩擦， B图表征系统对外做功情况。点为实验测量结果，实线为理论预测

Sci.Adv.4,5909(2018).pdf