Resonance-enhanced Floquet cavity electromagnonics

TL;DR

This paper demonstrates that using LC resonances significantly enhances Floquet engineering in cavity electromagnonics, enabling stronger magnon-photon interactions and more advanced signal operations at microwave frequencies.

Contribution

It introduces a resonance-enhanced approach to Floquet cavity electromagnonics, vastly improving drive efficiency and interaction strength compared to previous methods.

Findings

Enhanced Floquet drive via LC resonances boosts magnon-photon coupling.

Demonstration of advanced signal operations using GHz signals.

Potential for fully unleashing Floquet hybrid magnonics.

Abstract

Floquet engineering has been recently recognized as an important tool for manipulating the coherent magnon-photon interaction in cavity electromagnonics systems at microwave frequencies. In spite of the novel hybrid magnonic functionalities that have been demonstrated, the effect of the Floquet drive has been relatively weak due to the limited driving efficiency, limiting its broader application. This work shows that by utilizing LC resonances, the Floquet drive in our cavity electromagnonic device can be drastically enhanced, giving rise to drastically boosted interaction between hybrid modes with fundamentally different spectral characteristics compared with previous demonstrations. In addition, the Floquet drives can also be obtained from GHz signals on such a system, allowing the demonstration of more advanced signal operations. Our novel resonance-enhanced Floquet cavity electromagnonics points to a new direction to fully unleash the potential of Floquet hybrid magnonics.