Versatile braiding of non-Hermitian topological edge states
The mathematical concept of braiding describes how string-like objects can be interwoven, including topologically distinct ``links'' and ``knots''. A physical setting for realizing braids is the complex energy levels of non-Hermitian systems. The authors introduce here a route to generating energy braids, using topological edge states of non-Hermitian lattices. The model hosts braids like Solomon links and [$n$]-catenanes, which have not yet been observed physically. The model is experimentally feasible, requiring only a lattice with local gain and loss, without nonreciprocal coupling.
Authors
- You Wang (ORCID: https://orcid.org/0000-0001-8407-7010)
- Bofeng Zhu (ORCID: https://orcid.org/0009-0002-6189-6229)
- Qiang Wang (ORCID: https://orcid.org/0000-0003-3407-6444)
- Y. D. Chong (ORCID: https://orcid.org/0000-0002-8649-7884)
- Qi Jie Wang (ORCID: https://orcid.org/0000-0002-9910-1455)
Institutions
- Nanyang Technological University (SG)
- Collaborative Innovation Center of Advanced Microstructures (CN)
- Nanjing University (CN)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2024-10-22
- DOI
- https://doi.org/10.1103/physrevb.110.134317
- Citations
- 9
- Primary Topic
- Quantum Mechanics and Non-Hermitian Physics
- Type
- article
- Field-Weighted Citation Impact
- 3.04
Funders
- Agency for Science, Technology and Research
- National Research Foundation Singapore