Unidirectional transport in amorphous topological photonic crystals

Xinyue Qian; Yuting Yang; Liwei Shi; Xiaopeng Shen; Zhi Hong Hang

doi:10.1117/12.2667157

21 March 2023 Unidirectional transport in amorphous topological photonic crystals

Xinyue Qian, Yuting Yang, Liwei Shi, Xiaopeng Shen, Zhi Hong Hang

Proceedings Volume 12595, Advanced Fiber Laser Conference (AFL2022); 125950R (2023) https://doi.org/10.1117/12.2667157
Event: Advanced Fiber Laser Conference (AFL2022), 2022, Changsha, China

Abstract

Since the discovery of topology, many works have been focused on periodic lattice systems, where both short-and long-range order are taken into consideration. Here, we construct a two-dimensional amorphous photonic crystal possessing short-range order, but its level of long-range order can be controlled, and experimentally investigate the transport of topological edge states in this amorphous system. We demonstrate that topology properties still remain with unidirectional edge states propagation, immune to specific disorder strength. This proposed amorphous configuration provides new opportunities to explore the relationship of the short-range order only and topology and may alleviate the fabrication difficulties to topological optical devices for practical applications.

Citation Download Citation

Xinyue Qian, Yuting Yang, Liwei Shi, Xiaopeng Shen, and Zhi Hong Hang "Unidirectional transport in amorphous topological photonic crystals", Proc. SPIE 12595, Advanced Fiber Laser Conference (AFL2022), 125950R (21 March 2023); https://doi.org/10.1117/12.2667157

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