论文标题
强烈的光耦合对二聚体本征的极端重量化
Extreme renormalisations of dimer eigenmodes by strong light-matter coupling
论文作者
论文摘要
我们通过理论方式探索偶性元原子的二聚体二聚体二聚体二聚体二聚体的特征分析的极端重归于。首先，通过调整封闭光子腔的高度，我们可以在反对称“暗”模式下降低对称“明亮”模式的能级。由于对称模式的极化性质，这是可能的，该模式与腔和二聚体同时共享其激发。对于异质二聚体，我们表明可以平滑地调节对称模式到反对称的模式，从而导致从整个腔体扩展到集中在二聚体附近的浓缩的可变模式定位。此外，我们揭示了一个关键点，其中一个元原子变为“笼罩”，没有对驱动电场的响应，因此由二聚体重新辐射的场仅是其他元原子的场。我们从第一原理和全波电磁模拟中提供了对系统的确切分析描述，这些模拟显示出与分析模型有很强的定量一致性。我们的描述与偶性相互作用是主要机制的任何物理二聚体有关。
We explore by theoretical means an extreme renormalisation of the eigenmodes of a dimer of dipolar meta-atoms due to strong light-matter interactions. Firstly, by tuning the height of an enclosing photonic cavity, we can lower the energy level of the symmetric `bright' mode underneath that of the anti-symmetric `dark' mode. This is possible due to the polaritonic nature of the symmetric mode, that shares simultaneously its excitation with the cavity and the dimer. For a heterogeneous dimer, we show that the polariton modes can be smoothly tuned from symmetric to anti-symmetric, resulting in a variable mode localisation from extended throughout the cavity to concentrated around the vicinity of the dimer. In addition, we reveal a critical point where one of the meta-atoms becomes `shrouded', with no response to a driving electric field, and thus the field re-radiated by the dimer is only that of the other meta-atom. We provide an exact analytical description of the system from first principles, as well as full-wave electromagnetic simulations that show a strong quantitative agreement with the analytical model. Our description is relevant for any physical dimer where dipolar interactions are the dominant mechanism.
