Controllable magnon-induced transparency in a ferromagnetic material via cross- and self-Kerr effects

Nonlinear interactions between optical fields and magnetic modes in cavity magnonics constitute a rich source of various nontrivial effects optics quantum information processing. In magnonics, the nonlinear cross-Kerr effect, which shifts cavity's central frequency when material is pumped, causes system to exhibit both Kittle magnetostatic modes. Here, we propose new scheme for investigation probe transmission profiles magnonic systems composed microwave ferromagnetic (Yttrium iron garnet sphere). We report single-to-double magnon-induced transparency (MIT) dips sharp absorption (MIA) peak, demonstrate how cross- self-Kerr can significantly enhance or suppress these phenomena. It observed that splitting MIT window occurs incorporate magnon-magnon coupling, helps introducing degree freedom light-matter interaction problems. Moreover, investigate propagation group delay vicinity dip allows realization slow light longer period time. found cavity-Kittle coupling parameters influence delay, demonstrates subluminal-to-superluminal (and vice versa) phenomena may occur transform. These findings could pave way future research into with novel applications devices, might be exploited several such as computing devices memories.