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arXiv · 2608.21113

An autonomous feedback protocol: responding to temperature and potential changes in energy converters

Elsa Danielsson·Krishna Lyn Delima·Bruno Bertin-Johannet·Janine Splettstoesser
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Abstract

Nanoscale thermoelectric devices convert tiny amounts of heat into power. But what happens if the external conditions and resulting temperature differences are not a priori known? We propose a feedback mechanism that optimizes the performance of a quantum-point-contact-based heat engine (QPC). A quantum-dot detector measures the external conditions and gives autonomous feedback on the QPC's properties. We expect this feedback mechanism to be experimentally relevant for steady-state engines with unknown external conditions and for adapting dynamic charging processes to the potential buildup.

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Elsa Danielsson, Krishna Lyn Delima, Bruno Bertin-Johannet, Janine Splettstoesser. 2026-08-21. An autonomous feedback protocol: responding to temperature and potential changes in energy converters. https://arxiv.org/abs/2608.21113

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