Scientific Results

Topological photonics

Year: 2019

Authors: Ozawa T., Price HM., Amo A., Goldman N., Hafezi M., Lu L., Rechtsman MC., Schuster D., Simon J., Zilberberg O., Carusotto I.

Autors Affiliation: RIKEN, Interdisciplinary Theoret & Math Sci Program iTHE, Wako, Saitama 3510198, Japan; Univ Libre Bruxelles, Ctr Nonlinear Phenomena & Complex Syst, CP 231,Campus Plaine, B-1050 Brussels, Belgium; Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy; Univ Trento, Dipartimento Fis, I-38123 Povo, Italy; Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England; Univ Lille, CNRS, UMR 8523, Lab Phys Lasers Atomes & Mol,PhLAM, F-59000 Lille, France; Univ Maryland, Inst Res Elect & Appl Phys, Joint Quantum Inst, Dept Elect & Comp Engn,Dept Phys, College Pk, MD 20742 USA; Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China; Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China; Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802; Univ Chicago, James Franck Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA; Univ Chicago, Dept Phys, Chicago, IL 60637 USA; Swiss Fed Inst Technol, Inst Theoret Phys, CH-8093 Zurich, Switzerland

Abstract: Topological photonics is a rapidly emerging field of research in which geometrical and topological ideas are exploited to design and control the behavior of light. Drawing inspiration from the discovery of the quantum Hall effects and topological insulators in condensed matter, recent advances have shown how to engineer analogous effects also for photons, leading to remarkable phenomena such as the robust unidirectional propagation of light, which hold great promise for applications. Thanks to the flexibility and diversity of photonics systems, this field is also opening up new opportunities to realize exotic topological models and to probe and exploit topological effects in new ways. This article reviews experimental and theoretical developments in topological photonics across a wide range of experimental platforms, including photonic crystals, waveguides, metamaterials, cavities, optomechanics, silicon photonics, and circuit QED. A discussion of how changing the dimensionality and symmetries of photonics systems has allowed for the realization of different topological phases is offered, and progress in understanding the interplay of topology with non-Hermitian effects, such as dissipation, is reviewed. As an exciting perspective, topological photonics can be combined with optical nonlinearities, leading toward new collective phenomena and novel strongly correlated states of light, such as an analog of the fractional quantum Hall effect.


Volume: 91 (1)      Pages from: 015006-1  to: 015006-76

KeyWords: Topological photonics
DOI: 10.1103/RevModPhys.91.015006

Citations: 535
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