Research ArticlePHYSICS

Superadiabatic quantum friction suppression in finite-time thermodynamics

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Science Advances  27 Apr 2018:
Vol. 4, no. 4, eaar5909
DOI: 10.1126/sciadv.aar5909

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Abstract

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.

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