Higher-order topological quantum battery
Abstract
A quantum battery is a next-generation energy-storage device that exploits genuinely quantum properties such as superposition and coherence. We propose a second-order topological quantum battery coupled to a photonic crystal described by the breathing-Kagome model, where optical loss is present on all lattice sites while nonlinear gains are introduced selectively at the output sites. Under these realistic non-Hermitian conditions, the system exhibits a clear topological phase transition manifested in both the ergotropy and the charging power. Remarkably, perfect work extraction is realized in the topological phase, where the maximum value of the ergotropy is quantized and acts as a good topological-phase indicator. The triangular geometry coherently distributes energy into two quantum batteries, where mirror-symmetry-protected phase synchronization gives rise to collective energy storage.
Related
- Laser-induced metastable (anti-)skyrmion states with higher-order topological charge
- Altermagnetism-induced higher-order topological Dirac semimetals in two-dimensional nonsymmorphic systems
- Anti-higher-order topological insulators
- Collinear altermagnetism for 3D chiral higher-order topological insulators
- Experimental Realization of Higher-order Topological Water Wave Crystal
BibTeX
@misc{ezawa2026higherorder,
title = {{Higher-order topological quantum battery}},
author = {Motohiko Ezawa},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.07401},
eprint = {2611.07401},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.07401},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Higher-order topological quantum battery
AU - Motohiko Ezawa
PY - 2026
DA - 2026/11/05
PB - arXiv
DO - 10.48550/arxiv.2611.07401
UR - https://arxiv.org/abs/2611.07401
AB - A quantum battery is a next-generation energy-storage device that exploits genuinely quantum properties such as superposition and coherence. We propose a second-order topological quantum battery coupled to a photonic crystal described by the breathing-Kagome model, where optical loss is present on all lattice sites while nonlinear gains are introduced selectively at the output sites. Under these realistic non-Hermitian conditions, the system exhibits a clear topological phase transition manifested in both the ergotropy and the charging power. Remarkably, perfect work extraction is realized in the topological phase, where the maximum value of the ergotropy is quantized and acts as a good topological-phase indicator. The triangular geometry coherently distributes energy into two quantum batteries, where mirror-symmetry-protected phase synchronization gives rise to collective energy storage.
ER -