Related papers: Superextensive charging speeds in a correlated quantum charger

Superextensive charging speeds in a correlated quantum charger

URL: http://arxiv.org/abs/2601.02477v1
Date: Mon, 05 Jan 2026 19:00:04 GMT
Title: Superextensive charging speeds in a correlated quantum charger
Authors: Harald Schmid, Felix von Oppen, Gil Refael, Yang Peng,
Abstract summary: We define a quantum charger as an interacting quantum system that transfers energy between two drives.<n>The presence of long-range interactions within the charger can induce a collective steady-state charging mode.<n>We show that this effect persists up to a critical system size set by the breakdown of the high-frequency regime.
Score: 7.587052371005302
License: http://creativecommons.org/licenses/by/4.0/
Abstract: We define a quantum charger as an interacting quantum system that transfers energy between two drives. The key figure of merit characterizing a charger is its charging power. Remarkably, the presence of long-range interactions within the charger can induce a collective steady-state charging mode that depends superlinearly on the size of the charger, exceeding the performance of noninteracting, parallel units. Using the driven Lipkin-Meshkov-Glick model and power-law interacting spin chains, we show that this effect persists up to a critical system size set by the breakdown of the high-frequency regime. We discuss optimal work output as well as experimentally accessible initial states. The superlinear charging effect can be probed in trapped-ion experiments, and positions interacting Floquet systems as promising platforms for enhanced energy conversion.

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