Superadiabatic quantum friction suppression in finite-time thermodynamics
Shujin Deng, Aur\'elia Chenu, Pengpeng Diao, Fang Li, Shi Yu, Ivan, Coulamy, Adolfo del Campo, and Haibin Wu
TL;DR
This paper demonstrates experimentally that superadiabatic protocols can suppress quantum friction in finite-time thermodynamic cycles using a trapped Fermi gas, improving the efficiency of quantum thermal machines.
Contribution
It introduces an experimental implementation of superadiabatic strokes in quantum thermodynamics, showing friction suppression in a real quantum system.
Findings
Superadiabatic strokes eliminate quantum friction in a trapped Fermi gas.
Superadiabatic mean work matches adiabatic work, confirming friction suppression.
Experimental validation of superadiabatic control in quantum thermodynamic processes.
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 mean work and its adiabatic value.
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Taxonomy
TopicsAdvanced Thermodynamics and Statistical Mechanics · Quantum many-body systems · Quantum and electron transport phenomena