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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 as…
Realization of Topology-controlled Photonic Cavities in a Valley Photonic Crystal
Bei Yan, Baoliang Liao, Fulong Shi +11
We report an experimental realization of a new type of topology-controlled photonic cavities in valley photonic crystals by adopting judiciously oriented mirrors to localize the va…
Realization of type-II double-zero-index photonic crystals
Zebin Zhu, Dong Zhao, Ziyao Wang +3
Some photonic crystals (PCs) with Dirac-like conical dispersions exhibit the property of double zero refractive index (that is, both epsilon and mu near zero (EMNZ)), wherein the e…
Photonic bilayer Chern insulator with corner states
Subhaskar Mandal, Ziyao Wang, Rimi Banerjee +6
Photonic Chern insulators can be implemented in gyromagnetic photonic crystals with broken time-reversal (TR) symmetry. They exhibit gapless chiral edge states (CESs), enabling uni…
Realization of a three-dimensional photonic higher-order topological insulator
Ziyao Wang, Yan Meng, Bei Yan +13
The discovery of photonic higher-order topological insulators (HOTIs) has significantly expanded our understanding of band topology and provided unprecedented lower-dimensional top…
Observation of tunable topological polaritons in a cavity waveguide
Dong Zhao, Ziyao Wang, Linyun Yang +9
Topological polaritons characterized by light-matter interactions have become a pivotal platform in exploring new topological phases of matter. Recent theoretical advances unveiled…
Acoustic Three-dimensional Chern Insulators with Arbitrary Chern Vectors
Yang Linyun, Xi Xiang, Meng Yan +13
The Chern vector is a vectorial generalization of the scalar Chern number, being able to characterize the topological phase of three-dimensional (3D) Chern insulators. Such a vecto…
Spectral-isolated photonic topological corner mode with a tunable mode area and stable frequency
Zhongfu Li, Shiqi Li, Bei Yan +10
Emergent collective modes in lattices give birth to many intriguing physical phenomena in condensed matter physics. Among these collective modes, large-area modes typically feature…