Interactive Entanglement in Hybrid Opto-magno-mechanics System

TL;DR

This paper introduces a hybrid opto-magno-mechanical system that enables tunable, robust entanglement among magnons, mechanical resonators, and photons, with potential applications in quantum information processing.

Contribution

It presents a novel hybrid system with independently tunable cavities that can generate and control entanglement among multiple quantum carriers.

Findings

Entanglement is achievable with realistic parameters.

The system's entanglement is robust against thermal noise.

Independent cavity tuning allows control over entanglement properties.

Abstract

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.