Enhanced Nonreciprocal Quantum Battery Performance via Nonlinear Two-Photon Driving

TL;DR

This paper introduces a nonlinear two-photon driven quantum battery model with nonreciprocal dynamics, demonstrating enhanced energy storage efficiency and capacity, and providing analytical solutions for system behavior under environmental engineering.

Contribution

It presents a novel nonlinear two-photon driving quantum battery model with nonreciprocal dynamics and analytical solutions, outperforming single-photon processes in energy capacity and entropy control.

Findings

Increasing driving strength improves energy efficiency.

Two-photon process offers higher energy capacity than single-photon driving.

Optimizing system-bath coupling enhances performance under asymmetric dissipation.

Abstract

Quantum batteries have attracted significant attention as efficient quantum energy storage devices.In this work, we propose a nonlinear two-photon driving quantum battery model featuring nonreciprocal dynamics that enables a highly efficient unidirectional charging mechanism through environmental engineering. Using a Markovian master-equation approach, we derive analytical solutions for the system dynamics and identify the parameter regime required for dynamical equilibration. Our results reveal that increasing the driving strength enhances both energy conversion and storage efficiency, albeit at the cost of longer equilibration times. Compared with single-photon driving, the two-photon process exhibits a pronounced advantage in energy capacity and entropy regulation, which becomes more prominent under stronger driving. Under asymmetric dissipation, optimizing the system-bath coupling can further improve performance. The proposed model is experimentally feasible and can be implemented across multiple quantum platforms, including photonic systems, superconducting circuits, and magnonic devices.