腔磁子学中光场与磁模式之间的非线性相互作用，是光学和量子信息处理中各种非平凡效应的丰富源泉。在腔磁子学中，非线性交叉克尔效应在泵浦磁性材料时会移动腔的中心频率，使系统同时表现出Kittle模式和静磁模式。在此，我们提出一种新方案，用于研究由微波腔和铁磁材料（Yttrium iron garnet球体）组成的腔磁子系统中探测场的透射轮廓。我们报告了单到双磁子诱导透明（MIT）凹陷和尖锐的磁子诱导吸收（MIA）峰，并演示了非线性交叉和自克尔相互作用如何显著增强或抑制这些现象。观察到当引入磁子-磁子模式耦合时，MIT窗口发生分裂，这有助于为光与物质相互作用问题引入新的自由度。此外，我们研究了透明区域附近的群延迟传播，并展示了尖锐的凹陷如何实现更长时间的慢光。我们发现，腔-Kittle和磁子-磁子模式耦合参数均影响群延迟传播，这展示了亚光速到超光速（及反之）传播现象如何发生和转换。这些发现为未来研究腔磁子学器件中具有新应用的非线性效应铺平了道路，这些效应可能被用于量子计算器件和量子存储器等多种应用。
英文摘要：
Nonlinear interactions between optical fields and magnetic modes in cavity magnonics constitute a rich source of various nontrivial effects in optics and quantum information processing. In cavity magnonics, the nonlinear cross-Kerr effect, which shifts the cavity's central frequency when a magnetic material is pumped, causes the system to exhibit both Kittle and magnetostatic modes. Here, we propose a new scheme for the investigation of probe fields transmission profiles in cavity magnonic systems composed of a microwave cavity and a ferromagnetic material (Yttrium iron garnet sphere). We report single-to-double magnon-induced transparency (MIT) dips and a sharp magnon-induced absorption (MIA) peak, and demonstrate how nonlinear cross- and self-Kerr interactions can significantly enhance or suppress these phenomena. It is observed that the splitting of the MIT window occurs when we incorporate magnon-magnon modes coupling, which helps introducing a new degree of freedom to light-matter interaction problems. Moreover, we investigate the propagation of group delay in the vicinity of transparency and demonstrate how a sharp dip allows the realization of slow light for a longer period of time. We found that both the cavity-Kittle and magnon-magnon modes coupling parameters influence the propagation of group delay, which demonstrates how subluminal-to-superluminal (and vice versa) propagation phenomena may occur and transform. These findings could pave the way for future research into nonlinear effects with novel applications in cavity magnonics devices, which might be exploited for several applications such as quantum computing devices and quantum memories.
