Charging a Quantum Battery Mediated by Parity-Deformed Fields

TL;DR

This paper investigates how parity deformation of environmental fields influences the charging performance of a quantum battery, revealing that engineered environment interactions can induce beneficial non-Markovian memory effects.

Contribution

It demonstrates that parity deformation can induce and enhance non-Markovian memory effects, improving quantum battery charging efficiency through environment engineering.

Findings

Parity deformation introduces nonlinearities and intensity-dependent couplings.

Memory effects significantly enhance charging energy and efficiency.

Parity deformation can turn Markovian dynamics into non-Markovian, boosting performance.

Abstract

We study the effect of parity deformation of the environmental field modes on the wireless charging performance of a qubit-based open quantum battery (QB) consisting of a qubit-battery and a qubit-charger, where there is no direct interaction between the qubits and battery is charged by the mediation of the environment. The parity deformation introduces field nonlinearities as well as qubit-environment intensity-dependent couplings. We analyze in detail charging characteristics, including the charging energy, efficiency and ergotropy in both the weak and strong coupling regimes, and show that the memory effects of mediator environment are critical in enhancing the charging performance. In the strong coupling regime, parity deformation of the environment fields can further trigger non-Markovian quantum memory of the charger-battery system, thereby enhancing the QB charging performance based on the non-Markovianity. Surprisingly, if the charging process is Markovian in the absence of the parity deformation, parity deformation is able to induce memory effects in the charger-battery dynamics and transforms the Markovian process to the non-Markovian one. This work highlights that proper engineering of the coupling to an environment can introduce an extra quantum memory source to the underlying charging process in favor of environment-mediated charging of the battery.