Novelty Physics Research In Auxiliatry Mode Mediated Three Mode Cavity Manonics System

In the past years,quantum information technology has flourished.In order to use complementray advantages between various quantum systems,scientists have proposed the concept of hybrid quantum systems.Hybrid quantum system based on collective spin excitations in the ferromagnetic material(magnon)which can coherent coupling with the cavity photons has attracted much attention.Because of the good coherence and tunability of cavity magnonics system,some novel physical phenomena were observed in experiments,such as information gradient storage,the spintronics,and the control of microwave transmission direction.Moreover,cavity magnonics system can also inter-act with other physical systems,such as superconducting qubits,photons,and optical photons.It is expected to bulid a quantum information platform by using magnons as the core to implement interaction with other physical systems in the future.The coupling mechanism of most of cavity magnonics system is the direct dipole-dipole interaction.Recently,a new magnon-photo dissipative coupling was discovered and quickly gained popularity.A distinct feature of dissipatively coupled system is the level attraction of the hybridized modes which is in contrasts to the level repul-sion caused by coherent coupling.Because of the dissipative coupling,the loss is no longer a problem but beacomes avaluable means for controling losses in hybrid quan-tum systems.Split ring resonator(SRR)is one of the basic structures of metamaterials,which has a negative effective permeability near its resonance frequency(usually in the microwave band).In this article,we construct a three-mode cavity magnonics system mediated by the SRR as the auxiliarymode.By adjusting the damping rate of the SRR and the frequency detuning,we investigate the physical phenomena in this system and discuss it's possible applications.