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Superadiabatic quantum friction suppression in finite-time thermodynamics.

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.

SUBMITTER: Deng S 

PROVIDER: S-EPMC5922798 | biostudies-other | 2018 Apr

REPOSITORIES: biostudies-other

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Superadiabatic quantum friction suppression in finite-time thermodynamics.

Deng Shujin S   Chenu Aurélia A   Diao Pengpeng P   Li Fang F   Yu Shi S   Coulamy Ivan I   Del Campo Adolfo A   Wu Haibin H  

Science advances 20180427 4

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 an  ...[more]