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Direct Observation of Landau Levels in Silicon Photonic Crystals
preprintposted on 2023-06-09, 16:00 authored by Maria Barsukova, Fabien Grisé, Zeyu Zhang, Sachin Vaidya, Jonathan Guglielmon, Michael I. Weinstein, Li He, Bo Zhen, Randall McEntaffer, Mikael C. Rechtsman
We experimentally observe photonic Landau levels that arise due to a strain-induced pseudomagnetic field in a silicon photonic crystal slab. The Landau levels are dispersive (i.e., they are not flat bands) due to the distortion of the unit cell by the strain. We employ an additional strain which induces a pseudoelectric potential to flatten them.