Cavity optomagnonics with a magnetic vortex

In optomagnonics, light couples coherently to collective magnetic excitations in solid state systems. This topic is of high interest for quantum information processing platforms at the nanoscale. A unique feature of these systems is the possibility of coupling light to spin excitations on top of magnetic textures. A classical example of a texture is a magnetic vortex, which is the stable equilibrium configuration in thin micromagnetic disks. In this work, we study the optomagnonic coupling between magnon modes in the presence of a vortex, and light confined to whispering gallery modes in the disk geometry.