气候变化领域集成服务门户(CCPortal): Liquid-crystal-based topological photonics

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DOI	10.1073/pnas.2020525118
	Liquid-crystal-based topological photonics
	Abbaszadeh H.; Fruchart M.; van Saarloos W.; Vitelli V.
发表日期	2021
ISSN	00278424
卷号	118 期号:4
英文摘要	Liquid crystals are complex fluids that allow exquisite control of light propagation thanks to their orientational order and optical anisotropy. Inspired by recent advances in liquid-crystal photopatterning technology, we propose a soft-matter platform for assembling topological photonic materials that holds promise for protected unidirectional waveguides, sensors, and lasers. Crucial to our approach is to use spatial variations in the orientation of the nematic liquid-crystal molecules to emulate the time modulations needed in a so-called Floquet topological insulator. The varying orientation of the nematic director introduces a geometric phase that rotates the local optical axes. In conjunction with suitably designed structural properties, this geometric phase leads to the creation of topologically protected states of light. We propose and analyze in detail soft photonic realizations of two iconic topological systems: a Su–Schrieffer–Heeger chain and a Chern insulator. The use of soft building blocks potentially allows for reconfigurable systems that exploit the interplay between topological states of light and the underlying responsive medium. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Liquid crystals; Metamaterials; Topological matter; Topological photonics
语种	英语
scopus关键词	article; liquid crystal; photonics
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180861
作者单位	Instituut-Lorentz, Universiteit Leiden, Leiden, RA 2300, Netherlands; James Franck Institute, University of Chicago, Chicago, IL 60637, United States; Department of Physics, University of Chicago, Chicago, IL 60637, United States; Kadanoff Center for Theoretical Physics, University of Chicago, Chicago, IL 60637, United States
推荐引用方式 GB/T 7714	Abbaszadeh H.,Fruchart M.,van Saarloos W.,et al. Liquid-crystal-based topological photonics[J],2021,118(4).
APA	Abbaszadeh H.,Fruchart M.,van Saarloos W.,&Vitelli V..(2021).Liquid-crystal-based topological photonics.Proceedings of the National Academy of Sciences of the United States of America,118(4).
MLA	Abbaszadeh H.,et al."Liquid-crystal-based topological photonics".Proceedings of the National Academy of Sciences of the United States of America 118.4(2021).