Landau levels in strained two-dimensional photonic crystals

Abstract

The principal use of photonic crystals is to engineer the photonic density of states, which controls light-matter coupling. We theoretically show that strained 2D photonic crystals can generate artificial electromagnetic fields and highly degenerate Landau levels. Since photonic crystals are not described by tight-binding, we employ a multiscale expansion of the full wave equation. Using numerical simulations, we observe dispersive Landau levels which we show can be flattened by engineering a pseudoelectric field. Artificial fields yield a design principle for aperiodic nanophotonic systems.

arXiv commentSee ancillary files for supplemental material providing detailed derivations

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• Effective magnetic field induced by inhomogeneous Fermi velocity in strained honeycomb structures
• Pseudomagnetic suppression of non-Hermitian skin effect
• Magnon Landau levels in the strained antiferromagnetic honeycomb nanoribbons
• Bulk Localised Transport States in Infinite and Finite Quasicrystals via Magnetic Aperiodicity