Observation of Floquet solitons in a topological bandgap

@article{Mukherjee2020ObservationOF,
  title={Observation of Floquet solitons in a topological bandgap},
  author={Sebabrata Mukherjee and Mikael C. Rechtsman},
  journal={Science},
  year={2020},
  volume={368},
  pages={856 - 859}
}
Topological insulators go nonlinear Whereas solid-state insulators tend to be fixed by material properties, photonic topological insulators can be designed at will to mimic a variety of scenarios and complex interactions. Mukherjee and Rechtsman go beyond the linear optical regime that has been studied to date and show that photonic topological insulators can also exhibit nonlinear optical features (see the Perspective by Ablowitz and Cole). Their array of laser-written waveguides can support… 

Observation of Unidirectional Solitonlike Edge States in Nonlinear Floquet Topological Insulators

A salient feature of solid-state topological materials in two dimensions is the presence of conducting electronic edge states that are insensitive to scattering by disorder. Such unidirectional edge

Floquet Edge Multicolor Solitons

Topological insulators are unique physical structures that are insulators in their bulk, but support currents at their edges which can be unidirectional and topologically protected from scattering on

Nonlinear second-order photonic topological insulators

Higher-order topological insulators are a novel topological phase beyond the framework of conventional bulk–boundary correspondence1,2. In these peculiar systems, the topologically non-trivial

Quantized topological pumping of solitons in nonlinear photonics and ultracold atomic mixtures

Exploring the interplay between topological band structures and tunable nonlinearities has become possible with the development of synthetic lattice systems. In this emerging field of nonlinear

Topological phenomena demonstrated in photorefractive photonic lattices [Invited]

Topological photonics has attracted widespread research attention in the past decade due to its fundamental interest and unique manner in controlling light propagation for advanced applications.

Bimorphic Floquet topological insulators

Topological theories have established a unique set of rules that govern the transport properties in a wide variety of wave-mechanical settings. In a marked departure from the established approaches

An operator-based approach to topological photonics

Abstract Recently, the study of topological structures in photonics has garnered significant interest, as these systems can realize robust, nonreciprocal chiral edge states and cavity-like confined

Topological bulk solitons in a nonlinear photonic Chern insulator

Nonlinearities in lattices with topological band structures can induce topological interfaces in the bulk of structures and give rise to bulk solitons in the topological bandgaps. Here we study a

Observation of Edge Solitons in Topological Trimer Arrays.

We report the experimental observation of nonlinear light localization and edge soliton formation at the edges of fs-laser written trimer waveguide arrays, where transition from nontopological to

Topological gap solitons in a 1D non-Hermitian lattice

Nonlinear topological photonics is an emerging field aiming at extending the fascinating properties of topological states to the realm where interactions between the system con-stituents cannot be
...

References

SHOWING 1-10 OF 46 REFERENCES

Photonic Floquet topological insulators

This work proposes and experimentally demonstrate a photonic topological insulator free of external fields and with scatter-free edge transport—a photonic lattice exhibiting topologically protected transport of visible light on the lattice edges.

Floquet Chern insulators of light

Floquet topological phases in nonlinear photonic crystals under external drive are studied and how non-reciprocal transport can be achieved in a Floquet Chern insulator is shown.

Edge Solitons in Nonlinear-Photonic Topological Insulators.

It is shown theoretically that a photonic topological insulator can support edge solitons that are strongly self-localized and propagate unidirectionally along the lattice edge, and using soliton collisions for optical switching.

Observation of photonic anomalous Floquet topological insulators

This work implements a system where chiral edge modes exist although the Chern numbers of all bands are zero, and employs periodically driven photonic waveguide lattices to demonstrate topologically protected scatter-free edge transport in such anomalous Floquet topological insulators.

Self-localized states in photonic topological insulators.

Self-localized wave packets forming topological edge states residing in the bulk of a nonlinear photonic topological insulator exhibit the property of unidirectional transport, similar to the transport their linear counterparts display on the edge of a topology insulator.

Nonlinear light generation in topological nanostructures

This study reports the observation of a third-harmonic signal from a topologically non-trivial zigzag array of dielectric nanoparticles and the demonstration of strong enhancement of the nonlinear photon generation at the edge states of the array.

Topological photonics

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

Self-induced topological transitions and edge states supported by nonlinear staggered potentials

The canonical Su-Schrieffer-Heeger (SSH) array is one of the basic geometries that have spurred significant interest in topological band-gap modes. Here, we show that the judicious inclusion of

Experimental observation of anomalous topological edge modes in a slowly driven photonic lattice

This work demonstrates the experimental observation of anomalous topological edge modes in a 2D photonic lattice, where these propagating edge states are shown to coexist with a quasi-localized bulk.

Bulk soliton dynamics in bosonic topological insulators

We theoretically explore the dynamics of spatial solitons in nonlinear/interacting bosonic topological insulators. We employ a time-reversal broken Lieb-lattice analog of a Chern insulator and find