Cavity mediated effective interaction between phonon and magnon

TL;DR

This paper proposes a hybrid optomagnonic-phononic system where electromagnetic fields tune interactions between phonons and magnons, exploring their self-energy, thermal noise effects, and topological properties with exceptional points.

Contribution

It introduces a novel hybrid system with tunable phonon-magnon interactions and analyzes its topological features and chiral behavior under exceptional point encirclements.

Findings

Electromagnetic field can tune phonon-magnon interactions.

Topological features with exceptional points are identified.

Chiral characteristics are observed during encirclement.

Abstract

Optomagnonics and optomechanics have various applications ranging from tunable light sources to optical manipulation for quantum information science. Here, we propose a hybrid system with the interaction between phonon and magnon which could be tuned by the electromagnetic field based on the radiation pressure and magneto-optical effect. The self energy of the magnon and phonon induced by the electromagnetic field and the influence of the thermal noise are studied. Moreover, the topological features of the hybrid system is illustrated with resort to the dynamical encircling with the exceptional points, and the chiral characteristics under these encirclements are found.