Optomagnonics supports optical modes with high-quality optical factors and strong photon-magnon interaction on the scale of micrometers. These novel features provide an effective way to modulate the electromagnetic field in optical microcavities. Here in this work, we studied the magnon-induced chaos in an optomagnonical cavity under the condition of parity-time symmetry, and the chaotic behaviors of electromagnetic field could be observed under ultralow thresholds. Even more, the existence optomagnetic interaction makes this chaotic phenomenon controllable through modulating the external field. This research will enrich the study of light matter interaction in the microcavity and provide a theoretical guidance for random number state generation and the realization of the chaotic encryption of information on chips.

中文翻译：

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光学PT对称谐振器中的磁振子引起的混沌。

Optomagnonics支持具有微米级规模的高质量光学因子和强光子-磁振子相互作用的光学模式。这些新颖的特征为调制光学微腔中的电磁场提供了有效的方法。在本文中，我们研究了在奇偶时间对称条件下光磁谐振腔中的磁振子诱发的混沌，并且可以在超低阈值下观察到电磁场的混沌行为。更重要的是，由于存在光电磁相互作用，因此可以通过调制外部场来控制这种混沌现象。这项研究将丰富微腔中光物质相互作用的研究，并为随机数状态的产生和芯片信息的混沌加密的实现提供理论指导。