Parity-selected charging and noise-correlated work retention in a coupled Si/SiGe double quantum dot battery: theory and experimentally parameterized modeling
Abstract
We investigate extractable work storage in a capacitively coupled double quantum dot (DQD) quantum battery (QB) subjected to experimentally motivated detuning charge noise. The battery is modeled as two interacting charge qubits with an Ising-type capacitive coupling and is charged by resonant microwave modulation of the tunnel coupling channel. Detuning fluctuations are introduced as classical stochastic processes generated from a band-limited 1/f noise spectrum. For each noise realization, the evolution remains unitary, whereas decoherence and loss of contrast emerge after ensemble averaging. We analyze the total ergotropy, its population and coherent contributions, the energy basis populations, a passive ordering violation diagnostic, and the Jensen-Shannon coherence of the noise-averaged state. The results show that resonant tunnel coupling driving selects a dominant E0 <-> E3 population transfer channel in the interacting DQD spectrum. The dominant extractable work is stored in non-passive population distributions, in agreement with recent population ordering interpretations of ergotropy in QBs, while coherence accompanies and supports the resonant transfer as a transient dynamical resource. Detuning noise reduces the energy basis coherence amplitude and also weakens the population transfer pathway responsible for the dominant population ergotropy. This framework provides a noise-aware description of semiconductor QB charging based on extractable work rather than on injected energy alone.
Related
- Charge Retention in Lunar Regolith: Microscopic Processes and Constraints on Subsurface Charging
- An inadequate over-parameterized Mössbauer spectral analysis for the mistaken detection of surface FeIV=O, in Nature Communications 16, 7642 (2025)
- Detecting Nonbilocal Correlations via Parameterized Elegant Joint Measurement
- A Geometrically Parameterized Quasi-Stationary 3D Model for High-Frequency Induction Tube Welding
- Neural-Parameterized Cellular Automata for Wildfire Spread
BibTeX
@misc{loukhssami2026parityselected,
title = {{Parity-selected charging and noise-correlated work retention in a coupled Si/SiGe double quantum dot battery: theory and experimentally parameterized modeling}},
author = {Khalil Loukhssami and Khadija El Hawary and Sanaa Abaach and Morad El Baz},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2606.28082},
eprint = {2606.28082},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.28082},
}
RIS
TY - UNPB
TI - Parity-selected charging and noise-correlated work retention in a coupled Si/SiGe double quantum dot battery: theory and experimentally parameterized modeling
AU - Khalil Loukhssami
AU - Khadija El Hawary
AU - Sanaa Abaach
AU - Morad El Baz
PY - 2026
DA - 2026/10/26
PB - arXiv
DO - 10.48550/arxiv.2606.28082
UR - https://arxiv.org/abs/2606.28082
AB - We investigate extractable work storage in a capacitively coupled double quantum dot (DQD) quantum battery (QB) subjected to experimentally motivated detuning charge noise. The battery is modeled as two interacting charge qubits with an Ising-type capacitive coupling and is charged by resonant microwave modulation of the tunnel coupling channel. Detuning fluctuations are introduced as classical stochastic processes generated from a band-limited 1/f noise spectrum. For each noise realization, the evolution remains unitary, whereas decoherence and loss of contrast emerge after ensemble averaging. We analyze the total ergotropy, its population and coherent contributions, the energy basis populations, a passive ordering violation diagnostic, and the Jensen-Shannon coherence of the noise-averaged state. The results show that resonant tunnel coupling driving selects a dominant E0 <-> E3 population transfer channel in the interacting DQD spectrum. The dominant extractable work is stored in non-passive population distributions, in agreement with recent population ordering interpretations of ergotropy in QBs, while coherence accompanies and supports the resonant transfer as a transient dynamical resource. Detuning noise reduces the energy basis coherence amplitude and also weakens the population transfer pathway responsible for the dominant population ergotropy. This framework provides a noise-aware description of semiconductor QB charging based on extractable work rather than on injected energy alone.
ER -