Interplay of Nonstabilizerness and Ergotropy in Quantum Batteries
Abstract
Nonstabilizerness plays an essential role in the efficient simulation of quantum systems on quantum computers. In this work, we investigate its role in the context of quantum batteries (QBs). To this end, we consider a system of N spin-1/2 particles, with the left half serving as the charger and the right half as the battery. By studying different classes of interactions between the charger and the battery, we quantify the amount of nonstabilizerness required to store work in the QB. Our results reveal a strong correlation between the ergotropy stored in the battery and the total nonstabilizerness of the composite system whenever the Hamiltonian preserves a U(1) symmetry. In contrast, this correspondence is generally lost for more generic interactions. A similar behavior is observed for unitary circuit dynamics. Finally, we examine the complementary scenario in which the battery is initialized in a nonstabilizer state and subsequently charged through Clifford evolution. In this case, we find that the maximum average charging power is nonmonotonic in the initial nonstabilizerness. Remarkably, the highest average power can be achieved even when the initial state carries no magic (nonstabilizerness), demonstrating that initial magic is not a necessary ingredient for generating optimal charging power.
Related
- The Ergotropy of Quantum Batteries under Unruh Effect
- Geometric power capacity of coherent ergotropy in quantum batteries
- Ergotropy Activation and Coherence in Dissipatively Charged Quantum Batteries
- Nonstabilizerness of the entangling layer in quantum circuit Born machines
- Quantifying Nonstabilizerness of Quantum Codes by Removing the Inert Background
BibTeX
@misc{konar2026interplay,
title = {{Interplay of Nonstabilizerness and Ergotropy in Quantum Batteries}},
author = {Tanoy Kanti Konar and Jakub Zakrzewski},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2605.03600},
eprint = {2605.03600},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2605.03600},
}
RIS
TY - UNPB
TI - Interplay of Nonstabilizerness and Ergotropy in Quantum Batteries
AU - Tanoy Kanti Konar
AU - Jakub Zakrzewski
PY - 2026
DA - 2026/09/29
PB - arXiv
DO - 10.48550/arxiv.2605.03600
UR - https://arxiv.org/abs/2605.03600
AB - Nonstabilizerness plays an essential role in the efficient simulation of quantum systems on quantum computers. In this work, we investigate its role in the context of quantum batteries (QBs). To this end, we consider a system of N spin-1/2 particles, with the left half serving as the charger and the right half as the battery. By studying different classes of interactions between the charger and the battery, we quantify the amount of nonstabilizerness required to store work in the QB. Our results reveal a strong correlation between the ergotropy stored in the battery and the total nonstabilizerness of the composite system whenever the Hamiltonian preserves a U(1) symmetry. In contrast, this correspondence is generally lost for more generic interactions. A similar behavior is observed for unitary circuit dynamics. Finally, we examine the complementary scenario in which the battery is initialized in a nonstabilizer state and subsequently charged through Clifford evolution. In this case, we find that the maximum average charging power is nonmonotonic in the initial nonstabilizerness. Remarkably, the highest average power can be achieved even when the initial state carries no magic (nonstabilizerness), demonstrating that initial magic is not a necessary ingredient for generating optimal charging power.
ER -