Macroscopic entanglement between ferrimagnetic magnons and atoms via crossed optical cavity

• Ke Di, Xi Wang, Yinxue Zhao, Yu Liu, Huarong Xia, Anyu Cheng, and Jiajia Du
• received 02/02/2024; accepted 04/03/2024; posted 04/10/2024; Doc. ID 520039
• Abstract: We consider a two-dimensional opto-magnomechanical (OMM) system including two optical cavity modes, a magnon mode, a phonon mode, and a collection of two-level atoms. In this study, we demonstrate the methodology for generating stationary entanglement between two-level atoms and magnons, which are implemented using two optical cavities inside the setup. Additionally, we probe the entanglement transformation efficiency of switching from atom-phonon entanglement to atom-magnon entanglement. Furthermore, this improvement is found to be resistant to changes in temperature. The entanglement between atoms and magnons plays a crucial role in the construction of hybrid quantum networks.