Optical manipulation of a magnon-photon hybrid system

Abstract

We demonstrate an all-optical method for manipulating the magnetization in a 1-mm YIG (yttrium-iron-garnet) sphere placed in a $\sim 0.17$T uniform magnetic field. An harmonic of the frequency comb delivered by a multi-GHz infrared laser source is tuned to the Larmor frequency of the YIG sphere to drive magnetization oscillations, which in turn give rise to a radiation field used to thoroughly investigate the phenomenon. The radiation damping issue that occurs at high frequency and in the presence of highly magnetizated materials, has been overcome by exploiting magnon-photon strong coupling regime in microwave cavities. Our findings demonstrate an effective technique for ultrafast control of the magnetization vector in optomagnetic materials via polarization rotation and intensity modulation of an incident laser beam. We eventually get a second-order susceptibility value of $\sim 10^{-7}$ cm${}^2$/MW for single crystal YIG.

5 pages, 4 figures

References in corpus (3)

• Strongly coupled magnons and cavity microwave photons
• Hybridizing ferromagnetic magnons and microwave photons in the quantum limit
• Spin Pumping in Electrodynamically Coupled Magnon-Photon Systems

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• Remote generation of magnon Schrödinger cat state via magnon-photon entanglement
• Theory of the magnon Kerr effect in cavity magnonics
• Coherent and Dissipative Cavity Magnonics
• Nonreciprocal high-order sidebands induced by magnon Kerr nonlinearity
• Nonlinear Spin Currents
• Quantum Simulation of the Fermion-Boson Composite Quasi-Particles with a Driven Qubit-Magnon Hybrid Quantum System
• Driven-dissipative Quantum Dynamics in Cavity Magnon-Polariton System