WebWe achieve Floquet Chern insulators of light in dynamically driven nonlinear photonic crystals. Through numerical simulation, we show the topological phase transitions occur at synthetic Weyl points and the existence of topologically-protected chiral edge states. WebFloquet engineering offers a powerful approach to the generation of nonequilibrium topological phases with large topological invariants and hence a proliferation of topological edge modes.
Topological light-trapping on a dislocation - Academia.edu
WebAug 22, 2024 · Floquet Chern insulators of light. 13 September 2024. Li He, Zachariah Addison, … Bo Zhen. Superior robustness of anomalous non-reciprocal topological edge states. 13 October 2024. We start by showing that new bandgaps—Floquet gaps—can be created in driven nonlinear PhCs, which do not exist in the static band structure. We consider a two-dimensional PhC that involves second-order optical nonlinear materials such as LiNbO3. The static band structure is schematically shown in … See more To better illustrate some of the key concepts, we focus on an example when two bands become close to each other under driving ω2 − ω1≈ Ω, while both are far away from other … See more Next, we study topological phase transitions between Floquet Chern insulators and normal insulators and show these transition … See more Finally, we show the existence of chiral edge states at the interfaces between a Floquet Chern insulator (gray region in Fig. 4a) and normal … See more slow lotus
Phys. Rev. Lett. 112, 156801 (2014) - Floquet Fractional …
WebSep 27, 2024 · Circularly polarized light induces a transition to a topologically nontrivial Floquet band structure with the Berry curvature analogous to a Chern insulator. Importantly, the twisting allows for tuning electronic energy scales, which implies that the electronic bandwidth can be tailored to match realistic driving frequencies in the … WebHere, we study Floquet topological phases in general nonlinear PhCs under external drive and show how non-reciprocal transport can be achieved in a Floquet Chern insulator. … WebSep 13, 2024 · Topological phase transition points in 3D synthetic parameter space. a The topological phase transition point is defined in the parameter space of ( kx, ky, Ω). b … software pph 4 ayat 2