Topological Protection of Light Propagation in Photonic Crystals
E. Verhagen (AMOLF Institute for Atomic and Molecular Physics, Systems Biophysics)
Nikhil Parappurath (AMOLF Institute for Atomic and Molecular Physics)
S. Arora (TU Delft - QN/Kuipers Lab, Kavli institute of nanoscience Delft)
T.A. Bauer (Kavli institute of nanoscience Delft, TU Delft - QN/Kuipers Lab)
René Barczyk (AMOLF Institute for Atomic and Molecular Physics)
Filippo Alpeggiani (TU Delft - QN/Kuipers Lab, Kavli institute of nanoscience Delft)
L. Kuipers (Kavli institute of nanoscience Delft, TU Delft - QN/Quantum Nanoscience)
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Abstract
Two-dimensional photonic crystals allow for various types of photonic topological insulators. In this paper, we present our efforts to directly image on-chip light propagation in topological edge states. We quantify the robustness of such states to scattering at sharp corners and defects.
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