Super-Optimal Charging of Quantum Batteries via Reservoir Engineering

TL;DR

This paper introduces a reservoir engineering approach to quantum battery charging, leveraging dissipative interactions and collective effects to achieve super-optimal energy transfer efficiency in quantum systems.

Contribution

It presents a novel dissipative charging method using shared reservoirs, enhancing quantum battery performance beyond traditional coherent interaction techniques.

Findings

Engineered shared reservoirs enable optimal energy redistribution.

Collective effects significantly improve charging efficiency.

The approach is applicable to quantum circuit battery architectures.

Abstract

Energy dissipation, typically considered an undesirable process, has recently been shown to be harnessed as a resource to optimize the performance of a quantum battery. Following this perspective, we introduce a novel technique of charging in which coherent charger-battery interaction is replaced by a dissipative interaction via an engineered shared reservoir. We demonstrate that exploiting collective effects of the engineered shared reservoir allows for extra optimization giving rise to optimal redistribution of energy, which leads to a significant enhancement in the efficiency of the charging process. The article unveils the intricacies of built-in detuning within the context of a shared environment, offering a deeper understanding of the charging mechanisms involved. These findings apply naturally to quantum circuit battery architectures, suggesting the feasibility of efficient energy storage in these systems. Moreover, the super-optimal charging offers a practical justification for charger-battery configurations.