Valley-contrasting orbital angular momentum in photonic valley crystals

Abstract

Valley, as a degree of freedom, has been exploited to realize valley-selective Hall transport and circular dichroism in two-dimensional layered materials. On the other hand, orbital angular momentum of light with helical phase distribution has attracted great attention for its unprecedented opportunity to optical communicagtions, atom trapping, and even nontrivial topology engineering. Here, we reveal valley-contrasting orbital angular momentum in all-dielectric photonic valley crystals. Selective excitation of valley chiral bulk states is realized by sources carrying orbital angular momentum with proper chirality. Valley dependent edge states, predictable by nonzero valley Chern number, enable to suppress the inter-valley scattering along zigzag boundary, leading to broadband robust transmission in Z-shape bend without corner morphological optimization. Our work may open up a new door towards the discovery of novel quantum states and the manipulation of spin-orbit interaction of light in nanophotonics.

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Cited by in corpus (77)

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• Topological Sound
• Topological photonic crystals: physics, designs and applications
• Photonic-Crystal Exciton-Polaritons in Monolayer Semiconductors
• Observation of topological valley modes in an elastic hexagonal lattice
• Valley Topological Phases in Bilayer Sonic Crystals
• Pseudospin-valley coupled edge states in a photonic topological insulator
• Topologically protected valley-dependent quantum photonic circuits
• Chiral quantum optics using a topological resonator
• A brief review of topological photonics in one, two, and three dimensions
• Hybrid topological photonic crystals
• Tunable light flow control in valley photonic crystal waveguide
• Meron Spin Textures in Momentum Space
• Topological Polarization Singularities in Metaphotonics
• Topological metasurface: From passive toward active and beyond
• Second-harmonic generation via double topological valley-Hall kink modes in all-dielectric photonic crystals
• Theory and Experimental Investigation of the Quantum Valley Hall Effect
• Gapless Unidirectional Photonic Transport Using All-Dielectric Kagome Lattices
• Designing multi-directional energy-splitters and topological valley supernetworks
• Coexistence of pseudospin- and valley-Hall-like edge states in a photonic crystal with $C_{3v}$ symmetry
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• A topological photonic ring-resonator for on-chip channel filters
• Z_2 Photonic topological insulators in the visible wavelength range for robust nanoscale photonics
• Topological Valley Hall Edge State Lasing
• Layered Photonic Topological Insulators
• Geometrically navigating topological platonic modes around gentle and sharp bends
• Topological cavity based on slow light topological edge mode for broadband Purcell enhancement
• GaAs valley photonic crystal waveguide with light-emitting InAs quantum dots
• Fano resonance from a one-dimensional topological photonic crystal
• Experimental realization of chiral Landau levels in two-dimensional Dirac cone systems with inhomogeneous effective mass
• Photonic topological insulators a beginner's introduction
• The Nature of Topological Protection in Spin and Valley Hall Insulators
• Topologically protected Fano resonance in photonic valley Hall insulators
• Tuning Topological Phase Transitions in Hexagonal Photonic Lattices Made of Triangular Rods
• Evolution of topological edge modes from honeycomb photonic crystals to triangular-lattice photonic crystals
• Multifrequency and multimode topological waveguides in a Stampfli-triangle photonic crystal with large valley Chern numbers
• Topological valley transport under long-range deformations
• Valley-dependent Corner States in Honeycomb Photonic Crystal without Inversion Symmetry
• Valley Anisotropy in Elastic Metamaterials
• Chiral phonons in honeycomb sublattice of layered CoSn-like compounds
• Valley controlled propagation of pseudospin states in bulk metacrystal waveguides
• Manipulating Topological Valley Modes in Plasmonic Metasurfaces
• Topologically protected interface phonons in two-dimensional nanomaterials: hexagonal boron nitride and silicon carbide
• Valley vortex states and degeneracy lifting via photonic higher-band excitation
• Higher-order valley vortices enabled by synchronized rotation in a photonic crystal
• Guiding Robust Valley-dependent Edge States by Surface Acoustic Waves
• Rabi-like oscillation of photonic topological valley Hall edge states
• Transverse angular momentum in topological photonic crystals
• Local orbital-angular-momentum dependent surface states with topological protection
• On-chip ultra-compact hexagonal boron nitride topological ring-resonator in visible region
• Gradient catastrophe of nonlinear photonic valley-Hall edge pulses
• Tunable three-way valley Hall energy-splitter: venturing beyond graphene-like structures
• Topological properties of two-dimensional photonic square lattice without $C_4$ and $M_{x(y)}$ symmetries
• Edge states in self-complementary checkerboard photonic crystals: Zak phase, surface impedance and experimental verification
• Topological valley crystals in a photonic Su-Schrieffer-Heeger (SSH) variant
• Near- and Far-Field Excitation of Topological Plasmonic Metasurfaces
• Topological Edge Mode Tapering
• High Transmission in 120-degree Sharp Bends of Inversion-symmetric and Inversion-asymmetric Photonic Crystal Waveguides
• Observation of gapless corner modes in synthetic translation dimensions
• Topological bulk solitons in a nonlinear photonic Chern insulator
• Locally Polarized Wave Propagation through Metamaterials' Crystallinity
• Robust Transport of the Edge Modes along the Photonic Topological Interfaces of Different Configurations
• Unveiling spin-orbital angular momentum locking in photonic Dirac vortex cavities
• Valley-Chern Effect with LC-Resonators: A Modular Platform
• Experimental probe of band structures of bilayer valley photonic crystals
• Valley photonic crystal waveguides fabricated with CMOS-compatible process
• Topological phenomena demonstrated in photorefractive photonic lattices
• Magnetic doping-induced second-order and first-order topological phase transition inthe photonic alloy
• Pseudospin-valley-coupled phononic topological insulator with edge and corner states
• Fine Structures of Berry Curvature and Unquantized Valley Chern Numbers in Valley Photonic Crystals
• Valley-Hall-like second-order photonic topological insulators in Kagome lattice
• Acoustic topological circuitry in square and rectangular phononic crystals
• Classification of Topological Phase in 2D Photonic Continuous Media Using Electromagnetic Parameters
• Topological Pseudospin Hall Effect and Multi-frequency Corner Modes in Kagome-based Lattices