Robust Transport of the Edge Modes along the Photonic Topological Interfaces of Different Configurations
arXiv:2005.08775 · doi:10.1016/j.physb.2020.412550
Abstract
Two-dimensional photonic crystals made of six air holes on a core-shell dielectric material has been proposed to study the newly emerged photonic quantum spin Hall insulator. Specifically, radii modification of the air holes and core-shell without breaking time-reversal (TR) symmetry are supported by the C_6 point group symmetry upon a proposed scheme. It is shown that multiple topological transitions from an ordinary insulator with zero spin Chern number (Cs) to a topological insulator with a non-zero Cs can be achieved by modifying the geometry of the photonic structure. Studying the two counter-propagating helical edge modes which have the opposite group velocities are of individual importance for various optical purposes like scattering-free waveguides protected to various defects, disorders and strong light-matter interactions. We show that topological edge states demonstrate slow light characteristics. The findings emphasize the fact that exploring topological phase transition can be applied as a unique approach for realizing light transport, robust energy transportation and slow light in integrated photonic circuits and devices.
References in corpus (33)
- Topological Photonics
- Topological Photonics
- Possible Realization of Directional Optical Waveguides in Photonic Crystals with Broken Time-Reversal Symmetry
- The Valley Hall Effect in MoS2 Transistors
- Imaging topological edge states in silicon photonics
- Scheme to Achieve Silicon Topological Photonics
- Reflection-Free One-Way Edge Modes in a Gyromagnetic Photonic Crystal
- Analogs of quantum Hall effect edge states in photonic crystals
- All-Si Valley-Hall Photonic Topological Insulator
- Experimental realization of photonic topological insulator in a uniaxial metacrystal waveguide
- Monolayer MoS2: trigonal warping, "Γ-valley", and spin-orbit coupling effects
- Valley-protected backscattering suppression in silicon photonic graphene
- Valley-contrasting orbital angular momentum in photonic valley crystals
- Three-dimensional topological photonic crystal with a single surface Dirac cone
- Three-Dimensional All-Dielectric Photonic Topological Insulator
- Two-Dimensionally Confined Topological Edge States in Photonic Crystals
- Robust light transport in non-Hermitian photonic lattices
- Disorder-induced Floquet Topological Insulators
- Photonic analog of graphene model and its extension -- Dirac cone, symmetry, and edge states --
- Tight-binding parameterization for photonic band gap materials
- From Fano resonances to bound states in the continuum in dipole arrays at THz frequencies
- Topological Fano Resonances
- Accidental degeneracy and topological phase transitions in two-dimensional core-shell dielectric photonic crystals
- Phase diagram for the transition from photonic crystals to dielectric metamaterials
- Two-Dimensional Arsenene Oxide: A Realistic Large-gap Quantum Spin Hall Insulator
- Optical valley Hall effect for highly valley-coherent exciton-polaritons in an atomically thin semiconductor
- Topological transitions in continuously-deformed photonic crystals
- Mode-Locked Topological Insulator Laser Utilizing Synthetic Dimensions
- The Nature of Topological Protection in Spin and Valley Hall Insulators
- Topological valley transport under long-range deformations
- Topological response theory of doped topological insulators
- Topological photonic states and directional emission of the light exiting from the photonic topological structure composed of two dimensional honeycomb photonic crystals with different point group symmetries
- Topological phase transition of the centered rectangular photonic lattice