Abstract

We propose a scheme to generate magnon-induced absorption (MIA) in a two-cavity magnonics system. By placing an yttrium iron garnet (YIG) sphere into one of two coupled microwave cavities, three different interference pathways are established by the photon coupling and magnon–photon coupling, leading to the conversion from suppression to enhancement on resonance under proper conditions. Most interestingly, the analytical results of the probe absorption are solved based on bright and dark modes in a dressed-state picture, which can be used to explain the position, width, and height of the absorption peaks accurately. Furthermore, we investigate the noise spectral density (NSD) of the microwave cavity and find out the similar MIA phenomena, which may provide a feasible way to remotely detect a magnon with an optical method.

© 2023 Optica Publishing Group

Parametric-amplification-induced nonreciprocal magnon laser

Kai-Wei Huang, Ying Wu, and Liu-Gang Si
Opt. Lett. 47(13) 3311-3314 (2022)

Nonreciprocal magnon laser

Ye-jun Xu and Jun Song
Opt. Lett. 46(20) 5276-5279 (2021)

Generation of robust optical entanglement in cavity optomagnonics

Hong Xie, Le-Wei He, Chang-Geng Liao, Zhi-Hua Chen, and Xiu-Min Lin
Opt. Express 31(5) 7994-8004 (2023)

Improving mechanical cooling by using magnetic thermal noise in a cavity-magnomechanical system

Zhen Yang, Chengsong Zhao, Rui Peng, Junya Yang, and Ling Zhou
Opt. Lett. 48(2) 375-378 (2023)

Nonlocal magnon entanglement generation in coupled hybrid cavity systems

Da-Wei Luo, Xiao-Feng Qian, and Ting Yu
Opt. Lett. 46(5) 1073-1076 (2021)