Observation of gapless corner modes in synthetic translation dimensions
arXiv:2308.02495 · doi:10.1364/PRJ.506167
Abstract
The introduction of synthetic dimensions in topological photonic systems enriches the exploration of topological phase of light in higher-dimensional space beyond three-dimensional real-space. Recently, the gapless corner modes of topological photonic crystals under translational deformation have been proposed, but their experimental observation is still absent. Here, we observe the gapless corner modes in a photonic crystal slab under translational deformation. The corner mode exhibits a frequency dependence that can be tuned through the translation of the slab. Importantly, we find that the existence of gapless corner modes is independent of the specific corner configuration. The gapless corner modes are experimentally imaged via the near-field scanning measurement, and validated numerically by full-wave simulations. Our work contributes to the advancement of topological photonics and provides valuable insights into the exploration of gapless corner modes in synthetic dimensions.
References in corpus (18)
- Topological Photonics
- Electric Multipole Moments, Topological Multipole Moment Pumping, and Chiral Hinge States in Crystalline Insulators
- Visualization of higher-order topological insulating phases in two-dimensional dielectric photonic crystals
- Direct observation of corner states in second-order topological photonic crystal slabs
- Novel Topological Phase with Zero Berry Curvature
- Exploring 4D Quantum Hall Physics with a 2D Topological Charge Pump
- Topological quantum matter in synthetic dimensions
- Photonic crystal nanocavity based on a topological corner state
- Topological photonic crystals: physics, designs and applications
- Low-threshold topological nanolasers based on second-order corner state
- Observation of strong backscattering in valley-Hall photonic topological interface modes
- Experimental Realization of Weyl Exceptional Rings in a Synthetic Three-Dimensional Non-Hermitian Phononic Crystal
- Higher-order topological phases in tunable -symmetric photonic crystals
- Cavity Quantum Electrodynamics with Second-Order Topological Corner State
- Nonlinear imaging of nanoscale topological corner states
- Dual-Polarization Second-Order Photonic Topological Insulators
- Topologically protected second-harmonic generation via doubly resonant high-order photonic modes
- Second Chern crystals in four-dimensional synthetic translation space with inherently nontrivial topology