Theory of the magnon Kerr effect in cavity magnonics

Abstract

We develop a theory for the magnon Kerr effect in a cavity magnonics system, consisting of magnons in a small yttrium iron garnet (YIG) sphere strongly coupled to cavity photons, and use it to study the bistability in this hybrid system. To have a complete picture of the bistability phenomenon, we analyze two different cases in driving the cavity magnonics system, i.e., directly pumping the YIG sphere and the cavity, respectively. In both cases, the magnon frequency shifts due to the Kerr effect exhibit a similar bistable behavior but the corresponding critical powers are different. Moreover, we show how the bistability of the system can be demonstrated using the transmission spectrum of the cavity. Our results are valid in a wide parameter regime and generalize the theory of bistability in a cavity magnonics system.

10 pages, 6 figures

References in corpus (15)

• Strongly coupled magnons and cavity microwave photons
• Hybridizing ferromagnetic magnons and microwave photons in the quantum limit
• Quantum technologies with hybrid systems
• High Cooperativity Cavity QED with Magnons at Microwave Frequencies
• Spin Pumping in Electrodynamically Coupled Magnon-Photon Systems
• Observation of the exceptional point in cavity magnon-polaritons
• Magnon Kerr effect in a strongly coupled cavity-magnon system
• Triple-resonant Brillouin light scattering in magneto-optical cavities
• Exchange Magnon-Polaritons in Microwave Cavities
• Radiative bistability and thermal memory
• Cavity mediated manipulation of distant spin currents using cavity-magnon-polariton
• Magnetic spheres in microwave cavities
• Dispersive read-out of ferromagnetic resonance for strongly coupled magnons and microwave photons
• Optical manipulation of a magnon-photon hybrid system
• Linking Magnon-Cavity Strong Coupling to Magnon-Polaritons through Effective Permeability

Cited by in corpus (8)

• Hybrid quantum systems based on magnonics
• Dissipation-induced nonreciprocal magnon blockade in a magnon-based hybrid system
• Phase-controlled pathway interferences and switchable fast-slow light in a cavity-magnon polariton system
• Magnon-assisted photon-phonon conversion in the presence of the structured environments
• Nonreciprocal high-order sidebands induced by magnon Kerr nonlinearity
• Kerr nonlinearity induced strong spin-magnon coupling
• Explosive growth of bistability in a cavity magnonic system
• Cat-state-like non-Gaussian entanglement in magnon systems