Phase-Locked Quantum Battery Charging via Dissipative Mode Selection
Abstract
We investigate how dynamical instability and reservoir engineering can be harnessed to enhance the quality of quantum-battery charging in a bosonic two-mode system. We show that reservoir-engineered dissipative coupling selectively amplifies a single unstable quasi-dark mode, enabling phase-locked exponential charging at a reduced gain threshold, whereas coherent coupling can amplify two frequency-split unstable modes, resulting in persistent beating. This dissipative mode selection yields a near-unit ergotropy fraction and a substantially higher work-like signal-to-noise ratio (SNR), defined as ergotropy divided by the standard deviation of battery energy. Although optimizing the driving frequency enables coherent coupling to achieve faster charging and higher ergotropy power, dissipative coupling retains its advantage in the work-like SNR. An exact finite-time source-noise relation reveals that this advantage arises from a more constructive accumulation of coherent driving relative to incoherent fluctuations. Our results establish dissipative mode selection as a promising route to high-quality quantum-battery charging.
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BibTeX
@misc{ahmadi2026phaselocked,
title = {{Phase-Locked Quantum Battery Charging via Dissipative Mode Selection}},
author = {Borhan Ahmadi and Lei Du and André H. A. Malavazi and Shabir Barzanjeh and Adam Miranowicz and Paweł Horodecki},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.06712},
eprint = {2611.06712},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.06712},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Phase-Locked Quantum Battery Charging via Dissipative Mode Selection
AU - Borhan Ahmadi
AU - Lei Du
AU - André H. A. Malavazi
AU - Shabir Barzanjeh
AU - Adam Miranowicz
AU - Paweł Horodecki
PY - 2026
DA - 2026/11/04
PB - arXiv
DO - 10.48550/arxiv.2611.06712
UR - https://arxiv.org/abs/2611.06712
AB - We investigate how dynamical instability and reservoir engineering can be harnessed to enhance the quality of quantum-battery charging in a bosonic two-mode system. We show that reservoir-engineered dissipative coupling selectively amplifies a single unstable quasi-dark mode, enabling phase-locked exponential charging at a reduced gain threshold, whereas coherent coupling can amplify two frequency-split unstable modes, resulting in persistent beating. This dissipative mode selection yields a near-unit ergotropy fraction and a substantially higher work-like signal-to-noise ratio (SNR), defined as ergotropy divided by the standard deviation of battery energy. Although optimizing the driving frequency enables coherent coupling to achieve faster charging and higher ergotropy power, dissipative coupling retains its advantage in the work-like SNR. An exact finite-time source-noise relation reveals that this advantage arises from a more constructive accumulation of coherent driving relative to incoherent fluctuations. Our results establish dissipative mode selection as a promising route to high-quality quantum-battery charging.
ER -