Cavity and Quantum Magnonics

During the past decade, a frontier of light-matter interactions, known as Cavity Magnonics has emerged. It explores hybridized states governed by coupled dynamics involving light, microwaves, magnetic materials, mechanical oscillators, phonons, spin-active defects, and superconducting qubits. Breakthroughs in this area — such as magnon-mediated microwave-to-optical conversion, distant-control of spin currents, deterministic generation of a single-magnon state, non-reciprocity and non-Hermitian phenomena in hybrid magnonics systems — have attracted great attention across the communities of magnetism, non-Hermitian physics, and cavity quantum electrodynamics.

This special issue of APL Quantum aims to highlight recent theoretical and experimental breakthroughs in Cavity and Quantum Magnonics, fostering cross-disciplinary collaborations between active groups working in these growing fields.