Magnetoelectric Cavity Magnonics in Skyrmion Crystals
Abstract
We present a theory of magnetoelectric magnon-photon coupling in cavities hosting noncentrosymmetric magnets. Analogously to nonreciprocal phenomena in multiferroics, the magnetoelectric coupling is time-reversal and inversion asymmetric. This asymmetry establishes a means for exceptional tunability of magnon-photon coupling, which can be switched on and off by reversing the magnetization direction. Taking the multiferroic skyrmion-host CuOSeO with ultralow magnetic damping as an example, we reveal the electrical activity of skyrmion eigenmodes and propose it for magnon-photon splitting of ``magnetically dark'' elliptic modes. Furthermore, we predict a cavity-induced magnon-magnon coupling between magnetoelectrically active skyrmion excitations. We discuss applications in quantum information processing by proposing protocols for all-electrical magnon-mediated photon quantum gates, and a photon-mediated SPLIT operation of magnons. Our study highlights magnetoelectric cavity magnonics as a novel platform for realizing quantum-hybrid systems and the coherent transduction between photons and magnons in topological magnetic textures.
Keywords
Cite
@article{arxiv.2203.03241,
title = {Magnetoelectric Cavity Magnonics in Skyrmion Crystals},
author = {Tomoki Hirosawa and Alexander Mook and Jelena Klinovaja and Daniel Loss},
journal= {arXiv preprint arXiv:2203.03241},
year = {2022}
}
Comments
19 pages, 17 figures. Accepted version for PRX Quantum