On-demand magnon resonance isolation in cavity magnonics

Cavity magnonics is crucial for advancing next-generation signal processing (both classical and quantum), but its uptake has been limited by the challenge of achieving on-demand isolation and control of magnons, due to quasistatic magnon-photon interactions. This study employs Floquet engineering, using time-periodic drives in a multimode hybrid magnonic system to dynamically darken magnon modes, effectively decoupling them from the electromagnetic environment. By tuning the relative phase and amplitudes of the drives, precise control over magnon dynamics is achieved. This approach is also scalable, opening the door to large-scale, programmable hybrid magnonic circuits.