Nonreciprocal entanglement in cavity magnomechanics via the Barnett effect

作者：Tian-Xiang Lu, Z. Li, Liu-Sha Chen, Yan Wang, Xing Xiao, Hui Jing · 发表于：Physical Review A · 年份：2025 · DOI：10.1103/physreva.111.013713 · 被引用次数：25 · 研究领域：Mechanical and Optical Resonators、Force Microscopy Techniques and Applications、Photonic and Optical Devices

We theoretically propose a scheme for achieving nonreciprocal bipartite and tripartite entanglement among magnons, photons, and phonons utilizing the Barnett effect in a cavity magnomechanical (CMM) system where a rotating yttrium iron garnet sphere is placed in a microwave cavity. The Barnett effect induces a Barnett frequency shift that can be effectively controlled to be either positive or negative by adjusting the direction of the magnetic field. As a result, nonreciprocal bipartite and tripartite entanglement can be achieved, exhibiting robustness against the bath temperature. Our work provides a very accessible way to manipulate photon-magnon-phonon quantum resources based on CMM devices with the Barnett effect.