The power of photons: Cavity-mediated energy transfer between quantum devices

TL;DR

This paper investigates how a photonic cavity can enhance coherent energy transfer between quantum devices, especially when their energy levels are mismatched, offering a promising method for improved quantum energy management.

Contribution

It demonstrates that adding a photonic cavity as a mediator improves energy transfer efficiency, particularly in off-resonant conditions, and discusses experimental methods to optimize this process.

Findings

Photonic cavities enhance energy transfer between quantum devices.

Off-resonant energy transfer is significantly improved with cavity mediation.

Experimental protocols for switching interactions and tuning energy levels are proposed.

Abstract

The coherent energy transfer between a quantum charger and a quantum battery is analyzed. In particular, we study how to improve the direct energy transfer by adding a photonic cavity as a mediator. We show that the additional degree of freedom given by the photons consistently improves the transfer performances, above all in the off-resonant case, where there is a mismatch in the energy levels. An experimental feasible way to switch-on and off the interaction between each part of the systems and the possibility of changing the energy levels mismatch will be described, in view of finding the best working setup.