Visualization of Higher-Order Topological Insulating Phases in Two-Dimensional Dielectric Photonic Crystals
Nanjing University · China University of Mining and Technology · +1 more institution
Abstract
The studies of topological phases of matter have been developed from condensed matter physics to photonic systems, resulting in fascinating designs of robust photonic devices. Recently, higher-order topological insulators have been investigated as a novel topological phase of matter beyond the conventional bulk-boundary correspondence. Previous studies of higher-order topological insulators have been mainly focused on the topological multipole systems with negative coupling between lattice sites. Here we experimentally demonstrate that second-order topological insulating phases without negative coupling can be realized in two-dimensional dielectric photonic crystals. We visualize both one-dimensional…
Citation impact
- FWCI
- 42.20
- Percentile
- 100%
- References
- 64
Authors
9- BXBi-Ye XieCorresponding
Nanjing University
- GSGuangxu Su
Nanjing University
- HWHongfei Wang
Nanjing University
- HSHai Su
Nanjing University
- XSXiaopeng Shen
China University of Mining and Technology
Topics & keywords
- Topology (electrical circuits)
- Topological order
- Photonics
- Topological insulator
- Dielectric
- Multipole expansion
- Physics
- Photonic crystal