Details

Autor(en) / Beteiligte

• Wang, Yanan
• Wang, Hai-Xiao
• Liang, Li
• Zhu, Weiwei
• Fan, Longzhen
• Lin, Zhi-Kang
• Li, Feifei
• Zhang, Xiao
• Luan, Pi-Gang
• Poo, Yin
• Jiang, Jian-Hua
• Guo, Guang-Yu

Titel

Hybrid topological photonic crystals

Ist Teil von

• Nature communications, 2023-07, Vol.14 (1), p.4457-4457

Ort / Verlag

England: Nature Publishing Group

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Topologically protected photonic edge states offer unprecedented robust propagation of photons that are promising for waveguiding, lasing, and quantum information processing. Here, we report on the discovery of a class of hybrid topological photonic crystals that host simultaneously quantum anomalous Hall and valley Hall phases in different photonic band gaps. The underlying hybrid topology manifests itself in the edge channels as the coexistence of the dual-band chiral edge states and unbalanced valley Hall edge states. We experimentally realize the hybrid topological photonic crystal, unveil its unique topological transitions, and verify its unconventional dual-band gap topological edge states using pump-probe techniques. Furthermore, we demonstrate that the dual-band photonic topological edge channels can serve as frequency-multiplexing devices that function as both beam splitters and combiners. Our study unveils hybrid topological insulators as an exotic topological state of photons as well as a promising route toward future applications in topological photonics.