| Autor: |
Hu, Yuze, Tong, Mingyu, Jiang, Tian, Jiang, Jian-Hua, Chen, Hongsheng, Yang, Yihao |
| Zdroj: |
Nature Communications; 11/20/2024, Vol. 15 Issue 1, p1-10, 10p |
| Abstrakt: |
Going beyond the conventional theory, non-Abelian band topology reveals the global quantum geometry of multiple Bloch bands and unveils a new paradigm for topological physics. However, to date, experimental studies on non-Abelian topological states beyond one dimension are still restricted to systems with time-reversal (T ) symmetry. Here, exploiting a designer gyromagnetic photonic crystal, we find rich T -broken non-Abelian topological phases and their transitions with an unexpected connection to multigap antichiral edge states. By in-situ tuning the magnetic field in the gyromagnetic photonic crystal, we can create, braid, merge, and split the non-Abelian topological nodes in a unique way. Alongside this process, the multigap antichiral edge states can be tuned versatilely, giving rise to topological edge waveguiding with frequency-dependent directionality. These findings open a new avenue for non-Abelian topological physics and topological photonics. Non-Abelian band topology reveals the global quantum geometry of multiple Bloch bands and unveils a new paradigm for topological physics. Here, authors find rich T-broken non-Abelian topological phases and their transitions with an unexpected connection to multigap antichiral edge states. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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