UNC Physics Colloquium

Wei Zhang, Oakland University

Quantum transduction and spin-orbitronics using hybrid magnonic systems

Abstract
Hybrid magnonic systems have gained increased interest due to their potential impact in quantum transduction and coherent information processing. Magnons, as the fundamental excitation of magnetically ordered materials, exhibit promising features that can be tuned and made to coherently couple to other excitations, such as microwave photons, light, phonons, and other magnons. I will introduce our recent work in the coherent magnon-photon coupling in a permalloy-superconducting resonator device and the magnon-magnon coupling of a permalloy-yttrium iron garnet device. By controlling the coupling strength and the quantized spin waves, the hybrid magnon spectra can also exhibit magnetically induced transparency, which can be readily detected via our home-built magneto-optic spectroscopy. Lastly, I will show how spin-orbit effects can be used as an effective means to both tune and detect the dynamic magnetic properties in magnonic systems.