2024 Floquet chern insulator of light

Floquet chern insulator of light

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August undefined, 2024

WebThe U.S. Department of Energy's Office of Scientific and Technical Information http://www-math.mit.edu/~stevenj/papers/HeAd19.pdf

MIT Open Access Articles Floquet Chern insulators of …

WebPumping graphene with circularly polarized light is the archetype of light-tailoring topological bands. Realizing the induced Floquet-Chern-insulator state and demonstrating clear experimental evidence for its topological nature has been a challenge, and it has become clear that scattering effects play a crucial role. 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 shape and source from shading

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WebSep 13, 2024 · Floquet Chern insulators of light Nat Commun. 2024 Sep 13 ... Finally, we numerically demonstrate the existence of chiral edge states at the interfaces between a … WebApr 10, 2013 · Figure 1: Geometry and band structure of honeycomb photonic Floquet topological insulator lattice. a, Microscope image of the input facet of the photonic lattice, showing honeycomb geometry with ... 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. pontiac firebird dash cover

Topological Two-Dimensional Floquet Lattice on a Single …

WebApr 28, 2024 · Floquet engineering provides a powerful tool for shaping the topological structure of fermionic and bosonic settings alike 1,2,3,4,5,6,7,8,9,10,11,12.At its core, it relies on the fact that a ... WebSep 13, 2024 · Europe PMC is an archive of life sciences journal literature. shape a new tomorrowWebApr 11, 2024 · Floquet Chern insulators of light. 13 September 2024. Li He, Zachariah Addison, … Bo Zhen. Chiral topological semimetal with multifold band crossings and long Fermi arcs. 06 May 2024. shape and tape concealer

"WebSep 13, 2024 · The Floquet Chern insulator is the same setup as the right panel of Fig. 3d. All regions are driven at the same frequency Ω3, and the associated gap Chern number for the Floquet insulator is Cg = 1. " - Floquet chern insulator of light

Floquet chern insulator of light

Magnonic Floquet Quantum Spin Hall Insulator in Bilayer …

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. WebFeb 22, 2024 · Here, we extend topological phases into dynamically driven nonlinear systems and achieve a Floquet Chern insulator of light in nonlinear photonic crystals (PhCs). Specifically, we start by presenting the Floquet eigenvalue problem in driven two-dimensional PhCs and show it is necessarily non-Hermitian.

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WebMay 10, 2024 · In this respect, the concept of magnonic Floquet Chern insulator has emerged 41,42,43, where circularly-polarized light induces a dynamical Dzyaloshinskii-Moriya (DM) interaction 47,48,49 in a ... WebWe achieve Floquet Chern insulators of light in dynamically driven nonlinear photonic crystals. Through numerical simulation, we show the topological phase transitions occur …

WebMar 28, 2024 · Chirally stacked N-layer graphene is a semimetal with ±p N band-touching at two nonequivalent corners in its Brillioun zone. We predict that an off-resonant circularly polarized light (CPL) drives chirally stacked N-layer graphene into a Floquet Chern insulators (FCIs), aka quantum anomalous Hall insulators, with tunable high Chern … WebFeb 22, 2024 · Floquet Chern Insulators of Light. Achieving topologically-protected robust transport in optical systems has recently been of great interest. Most topological photonic …

WebApr 18, 2014 · The fractional Chern insulator state equivalent to the 1/3 Laughlin state appears at 7/12 total filling ( 1/6 filling of the upper band). The state also features spontaneous ferromagnetism and is thus an example of the spontaneous breaking of a continuous symmetry along with a topological phase transition. We discuss light-driven … WebThe NSF Public Access Repository (NSF-PAR) system and access will be unavailable from 10:00 PM ET on Friday, March 24 until 8:00 AM ET on Saturday, March 25 due to …

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 …

WebDec 22, 2024 · (b) Schematic depiction of the implementation of a photonic Floquet topological insulator using a three-dimensional waveguide array. (c) Quasienergy spectrum of the bipartite photonic lattice (δ = 0.18) showing two ungapped bulk bands (blue) with zero net Chern number and chiral edge states (red). (d) Micrograph of the facet of a … shape animal artWebFloquet Chern insulators of light Li He1, Zachariah Addison1, Jicheng Jin1, Eugene J. Mele1, Steven G. Johnson2 & Bo Zhen1 Achieving topologically-protected robust transport in optical systems has recently been of great interest. Most studied topological photonic structures can be understood by solving the shape and structure of an objectWebHere, we extend topological phases into dynamically driven systems and achieve a Floquet Chern insulator of light in nonlinear photonic crystals (PhCs). Specifically, we start by … shape and unity in artWebSymmetry is can away of most generic and useful concepts in science, too guiding to historic federal and selection regulation. Here we formulate a general group theory for dynamical symmetries (DSs) in time-periodic Floquet systems, and derive their correspondence to observable selection rules. We apply the teacher up harmonic … shape and structure of dnaWebFeb 22, 2024 · Request PDF Floquet Chern Insulators of Light Achieving topologically-protected robust transport in optical systems has recently been of great interest. Most … pontiac firebird fast and furiousWebFeb 9, 2024 · The breaking of time-reversal symmetry is a crucial ingredient to topological bands. It can occur intrinsically in materials with magnetic order, or be induced by external fields, such as magnetic fields in quantum Hall systems or circularly polarized light fields in Floquet Chern insulators. Apart from polarization, photons can carry another degree of … shape animal poemsWebSep 13, 2024 · @article{osti_1624194, title = {Floquet Chern insulators of light}, author = {He, Li and Addison, Zachariah and Jin, Jicheng and Mele, Eugene J. and Johnson, … shape animal crafts printables