Title: Phonon-polariton mediated dual electromagnetically induced transparency-like response in a THz metamaterial Show Chinese title

Title: 太赫兹超材料中通过声子极化子介导的双电磁感应透明度类似响应

Abstract: Light and matter can intertwine to create entirely new quantum states in the so-called strong-coupling regime, allowing unprecedented control over electromagnetic waves. In this work, strong-coupling mediated polaritonic states are exploited to demonstrate tunable dual electromagnetically induced transparency (EIT) like response in the terahertz (THz) frequency range using a micron-sized metamaterial system coupled with the phonon mode of a lead halide perovskite film. This architecture allows us to reversibly switch between the single and the dual EIT-like behavior without modifying the metamaterial structures. The dual EIT-like nature is further confirmed through the in-plane electric field distributions and the slow-light effects. The specific structural symmetry further allowed us to effectively switch between the dual EIT-like response and the conventional strong-coupling responses. Such tunability bears potential implications for developing metamaterial-phonon-based tunable THz devices such as switches, filters, and slow-light devices. Show Chinese abstract

Abstract: 光和物质可以在所谓的强耦合区域相互交织，产生完全新的量子态，从而实现对电磁波前所未有的控制。 在本工作中，利用强耦合介导的极化子态，在微米尺寸的超材料系统与铅卤钙钛矿薄膜的声子模式耦合的情况下，展示了太赫兹（THz）频率范围内的可调双电磁诱导透明（EIT）类似响应。 这种结构使我们能够在不改变超材料结构的情况下，可逆地在单个和双EIT类似行为之间切换。 通过平面内电场分布和慢光效应进一步证实了双EIT类似特性。 特定的结构对称性进一步使我们能够有效地在双EIT类似响应和传统的强耦合响应之间切换。 这种可调性对于开发基于超材料-声子的可调太赫兹器件，如开关、滤波器和慢光器件，具有潜在的应用意义。