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physics.optics2026
Observation of fractality-induced topology in photonic crystals
Bei Yan, Yingfeng Qi, Xiang Xi +6
Fractal topology--achieved by integrating nontrivial topology into fractal geometries with self-similarity and non-integer dimensions--has opened new avenues for exploring topologi…
physics.optics2026
Crosstalk-free Chiral Anomaly Bulk States in Photonic Crystals
Guochao Wei, Yingfeng Qi, Kang Du +5
Ultracompact cladding-free waveguide arrays with zero inter-channel spacing and negligible crosstalk open a new avenue for high-density integrated photonic circuits. However, exist…
physics.optics2024
Topological Dirac-vortex modes in a three-dimensional photonic topological insulator
Bei Yan, Yingfeng Qi, Ziyao Wang +8
Recently, topological Dirac-vortex modes in Kekulé-distorted photonic lattices have attracted broad interest and exhibited promising applications in robust photonic devices such a…