Topological photonics

By T. Ozawa, H. Price, A. Amo, Nathan Goldman, M. Hafezi, Ling Lu, M. Rechtsman, David I. Schuster, Jonathan Simon, Oded Zilberberg and 1 more. Reviews of Modern Physics, 2018

712 citations recorded by the source corpus.

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.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/c57c7297212486554fe8af9a864ee889cda177f0

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Citations in the corpus

Topological active matter (2020, background): “Besides optical and quantum systems 15,30 , it can also occur in mechanical systems, such as coupled oscillators 27,152,153 and simple fluids in circulator arrays 43,44 .”