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arXiv · 2009.07189

Photonic Berry curvature in double liquid crystal microcavities with broken inversion symmetry

Pavel Kokhanchik·Helgi Sigurdsson·Barbara Piętka·Jacek Szczytko·Pavlos G. Lagoudakis
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Abstract

We investigate a photonic device consisting of two coupled optical cavities possessing Rashba-Dresselhaus spin-orbit coupling, TE-TM splitting, and linear polarisation splitting that opens a tuneable energy gap at the diabolic points of the photon dispersion; giving rise to an actively addressable local Berry curvature. The proposed architecture stems from recent advancements in the design of artificial photonic gauge fields in liquid crystal cavities [K. Rechci\'{n}ska et al., Science 366, 727 (2019)]. Our study opens new perspectives for topological photonics, room-temperature spinoptronics, and studies on the quantum geometrical structure of photonic bands in extreme settings.

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Pavel Kokhanchik, Helgi Sigurdsson, Barbara Piętka, Jacek Szczytko, Pavlos G. Lagoudakis. 2020-09-15. Photonic Berry curvature in double liquid crystal microcavities with broken inversion symmetry. https://doi.org/10.1103/physrevb.103.l081406

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