The light manipulation beyond the diffraction limit plays an invaluable role in modern physics and nanophotonics. In this work, we have demonstrated a strong coupling with a large Rabi splitting of 151 meV between bulk WS2${\mathrm{WS}}_2$ excitons and anapole modes in the WS2${\mathrm{WS}}_2$-Si nanodisk heterostructure array with nanoholes as small as 50 nm radius. This result is acquired by introducing anapole modes to suppress radiative losses to confine light into subwavelength volumes and large spatial overlapping between excitons and strong optical fields. Our work shows that anapole modes may serve as a powerful way to enhance the interaction between light and matter at nanoscales, and it should pave an avenue toward high-performance all-dielectric optoelectronic applications.

中文翻译：

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促进全电介质异质结构中的anapole-exciton强耦合

超越衍射极限的光操纵在现代物理学和纳米光子学中发挥着不可估量的作用。在这项工作中，我们已经证明了在具有小至 50 nm 半径的纳米孔的WS 2 -Si 纳米盘异质结构阵列中，体WS 2${\mathrm{WS}}_2$激子和 anapole 模式之间具有 151 meV 的大 Rabi 分裂的强耦合。该结果是通过引入 anapole 模式来抑制辐射损失以将光限制在亚波长体积中以及激子和强光场之间的大空间重叠而获得的。我们的工作表明，anapole 模式可以作为增强纳米级光与物质之间相互作用的有效方式，它应该为高性能全电介质光电应用铺平道路。${\mathrm{WS}}_2$