75 citations · 174 across the 10 of their papers we have counts for
9 papers · 1 filter
Fractal hierarchy enables exponential scaling of topological boundary states
Limin Song, Zhichan Hu, Ziteng Wang +7
Exponential growth describes an extremely rapid process ubiquitous across mathematics and diverse physical, biological, and technological systems. Here, we introduce a class of fra…
Subsymmetry-protected compact edge states
Ruoqi Cheng, Domenico Bongiovanni, Ziteng Wang +6
Sub-symmetry (SubSy) protected topological states represent a concept that goes beyond the conventional framework of symmetry-protected topological (SPT) phases, demonstrating that…
Quadratic Band Touching and Nontrivial Winding Reveal Generalized Angular Momentum Conservation
Yihan Wang, Domenico Bongiovanni, Dario Jukić +7
Angular momentum conservation stands as one of the most fundamental and robust laws of physics. In discrete lattices, however, its realization can deviate markedly from the continu…
Multi-topological phases of matter
Ziteng Wang, Domenico Bongiovanni, Xiangdong Wang +7
The discovery of topological phases of matter and topological boundary states had tremendous impact on condensed matter physics and photonics, where topological phases are defined…
Observation of topologically distinct corner states in "bearded" photonic Kagome lattices
Limin Song, Domenico Bongiovanni, Zhichan Hu +6
Kagome lattices represent an archetype of intriguing physics, attracting a great deal of interest in different branches of natural sciences, recently in the context of topological…
Topologically protected vortex transport via chiral-symmetric disclination
Zhichan Hu, Domenico Bongiovanni, Ziteng Wang +6
Vortex phenomena are ubiquitous in nature, from vortices of quantum particles and living cells [1-7], to whirlpools, tornados, and spiral galaxies. Yet, effective control of vortex…
Photonic p-orbital higher-order topological insulators
Yahui Zhang, Domenico Bongiovanni, Ziteng Wang +9
The orbital degrees of freedom play a pivotal role in understanding fundamental phenomena in solid-state materials as well as exotic quantum states of matter including orbital supe…
Sub-symmetry protected topological states
Ziteng Wang, Xiangdong Wang, Zhichan Hu +7
A hallmark of symmetry-protected topological phases (SPTs) are topologically protected boundary states, which are immune to perturbations that respect the protecting symmetry. It i…
Nonlinear control of photonic higher-order topological bound states in the continuum
Zhichan Hu, Domenico Bongiovanni, Dario Jukić +7
Higher-order topological insulators (HOTIs) are recently discovered topological phases, possessing symmetry-protected corner states with fractional charges. An unexpected connectio…