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Topological phonon-polariton funneling in midinfrared metasurfaces
Science ( IF 56.9 ) Pub Date : 2021-10-08 , DOI: 10.1126/science.abj5488
S Guddala 1, 2 , F Komissarenko 1, 2 , S Kiriushechkina 1 , A Vakulenko 1 , M Li 1, 2, 3 , V M Menon 2, 3 , A Alù 1, 3, 4 , A B Khanikaev 1, 2, 3
Affiliation  

Topological photonics offers enhanced control over electromagnetic fields by providing a platform for robust trapping and guiding of topological states of light. By combining the strong coupling between topological photons with phonons in hexagonal boron nitride (hBN), we demonstrate a platform to control and guide hybrid states of light and lattice vibrations. The observed topological edge states of phonon-polaritons are found to carry nonzero angular momentum locked to their propagation direction, which enables their robust transport. Thus, these topological quasiparticles enable the funneling of infrared phonons mediated by helical infrared photons along arbitrary pathways and across sharp bends, thereby offering opportunities for applications ranging from Raman and vibrational spectroscopy with structured phonon-polaritons to directional heat dissipation.

中文翻译:

中红外超表面中的拓扑声子极化子漏斗

拓扑光子学通过为光的拓扑状态的稳健捕获和引导提供平台,增强了对电磁场的控制。通过将拓扑光子与六方氮化硼 (hBN) 中的声子之间的强耦合相结合,我们展示了一个控制和引导光和晶格振动混合状态的平台。发现观察到的声子极化子的拓扑边缘状态携带锁定到其传播方向的非零角动量,这使得它们能够稳健传输。因此,这些拓扑准粒子能够使由螺旋红外光子介导的红外声子沿任意路径和急剧弯曲形成漏斗,
更新日期:2021-10-08
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