Landau levels in strained two-dimensional photonic crystals

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 des...

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Bibliographic Details
Published in:arXiv.org 2020-03
Main Authors: Guglielmon, J, Rechtsman, M C, Weinstein, M I
Format: Article
Language:English
Subjects:
Computer simulation
Crystals
Electromagnetic fields
Photonic crystals
Wave equations
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.2003.06690