Interactive entanglement in hybrid opto-magno-mechanics system

We present a novel cavity opto-magno-mechanical hybrid system to generate entanglements among multiple quantum carriers, such as magnons, mechanical resonators, and cavity photons in both the optical and microwave domains. Two Yttrium iron garnet (YIG) spheres are embedded in two separate microwave cavities which are joined by a communal mechanical resonator. Because the microwave cavities are separate, the ferromagnetic resonate frequencies of two YIG spheres can be tuned independently, as well as the cavity frequencies. We show that entanglement can be achieved with experimentally reachable parameters. The entanglement is robust against environmental thermal noise, owing to the mechanical cooling process achieved by the optical cavity. The maximum entanglement among different carriers is achieved by optimizing the parameters of the system. The individual tunability of the separated cavities allows us to independently control the entanglement properties of different subsystems and establish quantum channels with different entanglement properties in one system. This work could provide promising applications in quantum metrology and quantum information tasks.

Automated summary

We propose a novel cavity opto-magno-mechanical hybrid system that can create entanglement among multiple quantum carriers in both the optical and microwave domains. By embedding two Yttrium iron garnet (YIG) spheres in separate microwave cavities, joined by a communal mechanical resonator, we can independently tune the ferromagnetic resonance frequencies and cavity frequencies. Experimental results show achievable entanglement using realistic parameters, and the entanglement is robust against environmental thermal noise due to the mechanical cooling process achieved by the optical cavity. By optimizing the system parameters, the maximum entanglement among different carriers can be achieved, allowing for independent control of entanglement properties in different subsystems and establishing quantum channels with different entanglement properties in one system. This work has promising applications in quantum metrology and quantum information tasks.