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

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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BibTeX RIS

BibTeX

@misc{danielsson2026autonomous,
  title = {{An autonomous feedback protocol: responding to temperature and potential changes in energy converters}},
  author = {Elsa Danielsson and Krishna Lyn Delima and Bruno Bertin-Johannet and Janine Splettstoesser},
  howpublished = {arXiv},
  year = {2026},
  month = aug,
  doi = {10.48550/arxiv.2608.21113},
  eprint = {2608.21113},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2608.21113},
  note = {CC BY 4.0},
}

RIS

TY  - UNPB
TI  - An autonomous feedback protocol: responding to temperature and potential changes in energy converters
AU  - Elsa Danielsson
AU  - Krishna Lyn Delima
AU  - Bruno Bertin-Johannet
AU  - Janine Splettstoesser
PY  - 2026
DA  - 2026/08/28
PB  - arXiv
DO  - 10.48550/arxiv.2608.21113
UR  - https://arxiv.org/abs/2608.21113
AB  - 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.
ER  -

Abstract

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