Probing coherent quantum thermodynamics using a trapped ion

O. Onishchenko, G. Guarnieri (), P. Rosillo-Rodes, D. Pijn, J. Hilder, U. G. Poschinger, M. Perarnau-Llobet, J. Eisert and F. Schmidt-Kaler
Additional contact information
O. Onishchenko: Universität Mainz
G. Guarnieri: University of Pavia
P. Rosillo-Rodes: Campus Universitat de les Illes Balears
D. Pijn: Universität Mainz
J. Hilder: Universität Mainz
U. G. Poschinger: Universität Mainz
M. Perarnau-Llobet: University of Geneva
J. Eisert: Freie Universität Berlin
F. Schmidt-Kaler: Universität Mainz

Nature Communications, 2024, vol. 15, issue 1, 1-6

Abstract: Abstract Quantum thermodynamics is aimed at grasping thermodynamic laws as they apply to thermal machines operating in the deep quantum regime, where coherence and entanglement are expected to matter. Despite substantial progress, however, it has remained difficult to develop thermal machines in which such quantum effects are observed to be of pivotal importance. In this work, we demonstrate the possibility to experimentally measure and benchmark a genuine quantum correction, induced by quantum friction, to the classical work fluctuation-dissipation relation. This is achieved by combining laser-induced coherent Hamiltonian rotations and energy measurements on a trapped ion. Our results demonstrate that recent developments in stochastic quantum thermodynamics can be used to benchmark and unambiguously distinguish genuine quantum coherent signatures generated along driving protocols, even in presence of experimental SPAM errors and, most importantly, beyond the regimes for which theoretical predictions are available (e.g., in slow driving).

Date: 2024
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DOI: 10.1038/s41467-024-51263-3

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