• Corpus ID: 250451709

Observation of strong backscattering in valley-Hall photonic topological interface modes

  title={Observation of strong backscattering in valley-Hall photonic topological interface modes},
  author={Christian Anker Rosiek and Guillermo Arregui and Anastasiia Vladimirova and M. Albrechtsen and Babak Vosoughi Lahijani and Rasmus E. Christiansen and S{\o}ren Stobbe},
The unique properties of light underpin the visions of photonic quantum technologies, optical interconnects, and a wide range of novel sensors, but a key limiting factor today is losses due to either absorption or backscattering on defects. Recent developments in topological photonics have fostered the vision of backscattering-protected waveguides made from topological interface modes, but, surprisingly, measurements of their propagation losses were so far missing. Here we report on… 

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