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Nontrivial band geometry in an optically active system.

ABSTRACT: Optical activity, also called circular birefringence, is known for two hundred years, but its applications for topological photonics remain unexplored. Unlike the Faraday effect, the optical activity provokes rotation of the linear polarization of light without magnetic effects, thus preserving the time-reversal symmetry. In this work, we report a direct measurement of the Berry curvature and quantum metric of the photonic modes of a planar cavity, containing a birefringent organic microcrystal (perylene) and exhibiting emergent optical activity. This experiment, performed at room temperature and at visible wavelength, establishes the potential of organic materials for implementing non-magnetic and low-cost topological photonic devices.

SUBMITTER: Ren J

PROVIDER: S-EPMC7846789 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature

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Nontrivial band geometry in an optically active system.

Ren Jiahuan J Liao Qing Q Li Feng F Li Yiming Y Bleu Olivier O Malpuech Guillaume G Yao Jiannian J Fu Hongbing H Solnyshkov Dmitry D

Nature communications 20210129 1

Optical activity, also called circular birefringence, is known for two hundred years, but its applications for topological photonics remain unexplored. Unlike the Faraday effect, the optical activity provokes rotation of the linear polarization of light without magnetic effects, thus preserving the time-reversal symmetry. In this work, we report a direct measurement of the Berry curvature and quantum metric of the photonic modes of a planar cavity, containing a birefringent organic microcrystal ...[more]

PMID: 33514702

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