Possible Realization of Optical Quadratic and Dirac Points in Woodpile Photonic Crystals
arXiv:2108.00255 · doi:10.1364/OE.456614
Abstract
The simulation of fermionic relativistic physics, e.g., Dirac and Weyl physics, has led to the discovery of many unprecedented phenomena in photonics, of which the optical-frequency realization is, however, still challenging. Here, surprisingly, we discover that the woodpile photonic crystals commonly used for optical frequency applications host exotic fermion-like relativistic degeneracies: a Dirac nodal line and a fourfold quadratic point, as protected by the nonsymmorphic crystalline symmetry. Deforming the woodpile photonic crystal leads to the emergence of type-II Dirac points from the fourfold quadratic point. Such type-II Dirac points can be detected by its anomalous refraction property which is manifested as a giant birefringence in a slab setup. Our findings provide a promising route towards 3D optical Dirac physics in all-dielectric photonic crystals.
References in corpus (29)
- Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
- Weyl and Dirac Semimetals in Three Dimensional Solids
- Photonic Floquet Topological Insulators
- Possible Realization of Directional Optical Waveguides in Photonic Crystals with Broken Time-Reversal Symmetry
- Type-II Weyl Semimetals
- Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi
- Photonic Analogue of Two-dimensional Topological Insulators and Helical One-Way Edge Transport in Bi-Anisotropic Metamaterials
- Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)
- Imaging topological edge states in silicon photonics
- Scheme to Achieve Silicon Topological Photonics
- Reflection-Free One-Way Edge Modes in a Gyromagnetic Photonic Crystal
- Beyond Dirac and Weyl fermions: Unconventional quasiparticles in conventional crystals
- Experimental observation of Weyl points
- Weyl points and line nodes in gapless gyroid photonic crystals
- Experimental realization of photonic topological insulator in a uniaxial metacrystal waveguide
- Strain-induced pseudomagnetic field and Landau levels in photonic structures
- Three-dimensional topological photonic crystal with a single surface Dirac cone
- Three-Dimensional All-Dielectric Photonic Topological Insulator
- Observing Zitterbewegung for photons near the Dirac point of a two-dimensional photonic crystal
- Experimental observation of optical Weyl points
- Extremal transmission at the Dirac point of a photonic band structure
- Plasmon Weyl Degeneracies in Magnetized Plasma
- Accidental degeneracy and topological phase transitions in two-dimensional core-shell dielectric photonic crystals
- Hyperbolic Weyl point in reciprocal chiral metamaterial
- Three dimensional photonic Dirac points in metamaterials
- Multi Weyl Points and the Sign Change of Their Topological Charges in Woodpile Photonic Crystals
- Three-dimensional photonic Dirac points stabilized by point group symmetry
- Type-II Dirac Photons
- Observation of a charge-2 photonic Weyl point in the infrared