Weyl points in photonic-crystal superlattices
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Weyl-points_2DMat.pdf
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Author(s)
Bravo-Abad, Jorge
Buljan, Hrvoje
Lu, Ling
Fu, Liang
Soljacic, Marin
Date Issued
August 2015
Journal
2D Materials
Publisher
IOP Publishing
Citation
Bravo-Abad, Jorge; Lu, Ling; Fu, Liang; Buljan, Hrvoje and Soljačić, Marin. “Weyl Points in Photonic-Crystal Superlattices.” 2D Materials 2, no. 3 (August 19, 2015): 034013.
Version
Author's final manuscript
Abstract
We show that Weyl points can be realized in all-dielectric superlattices based on three-dimensional (3D) layered photonic crystals. Our approach is based on creating an inversion-breaking array of weakly-coupled planar defects embedded in a periodic layered structure with a large omnidirectional photonic band gap. Using detailed band structure calculations and tight-binding theory arguments, we demonstrate that this class of layered systems can be tailored to display 3D linear point degeneracies between two photonic bands, without breaking time-reversal symmetry and using a configuration that is readily-accessible experimentally. These results open new prospects for the observation of Weyl points in the near-infrared and optical regimes and for the application of Weyl-physics in integrated photonic devices.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1088/2053-1583/2/3/034013
