Collective enhancement in nonreciprocal multimode quantum batteries
Phys. Rev. B 112, 104318 – Published 22 September, 2025
DOI: https://doi.org/10.1103/67wh-1fxv
Abstract
A quantum battery is a quantum mechanical storage device that enables fast charging and higher-energy densities, surpassing classical limits. We demonstrate an enhanced charging performance in nonreciprocal quantum batteries (QBs) featuring unidirectional coherent couplings in multimode bosonic systems. Crucially, a multimode nonreciprocal quantum battery achieves a speedup and quadratic scaling advantage in charging dynamics, a dramatic improvement over both single-mode systems and reciprocal multimode architectures. More precisely, fast charging dynamics occur under symmetrically matched local dissipation rates, whereas a quadratic scaling emerges under identical global dissipation rates. Our findings establish multimode nonreciprocity as a transformative resource for quantum energy technologies, with implications for energy capture, storage, and conversion in quantum devices.
