Higher-order quantum spin Hall effect in a photonic crystal
- Biye Xie
- Guangxu Su
- Hong-Fei Wang
- Feng Liu
- Lumang Hu
- Si-Yuan Yu
- Peng Zhan
- Ming-Hui Lu
- Zhenlin Wang
- Yan-Feng Chen
Publication date
July 2020
DOI Publisher
Springer Science and Business Media LLC Journal
Nature CommunicationsAbstract
The quantum spin Hall effect is limited to one-dimensional lower boundary states which limits the possibilities for its exploitation in photonic devices. Here, the authors demonstrate a higher-order quantum spin Hall effect in a photonic crystal and observe opposite pseudospin corner states
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