URL details: www.nature.com/articles/s41377-020-00458-6
URL title:
Direct quantification of topological protection in symmetry-protected photonic edge states at telecom wavelengths | Light: Scien
URL description:
Topological on-chip photonics based on tailored photonic crystals (PhCs) that emulate quantum valley-Hall effects has recently gained widespread interest owing to its promise of robust unidirectional transport of classical and quantum information. We present a direct quantitative evaluation of topological photonic edge eigenstates and their transport properties in the telecom wavelength range using phase-resolved near-field optical microscopy. Experimentally visualizing the detailed sub-wavelength structure
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