Chiral Bogoliubons in Nonlinear Bosonic Systems
Abstract
We present a versatile scheme for creating topological Bogoliubov excitations in weakly interacting bosonic systems. Our proposal relies on a background stationary field that consists of a Kagome vortex lattice, which breaks time-reversal symmetry and induces a periodic potential for Bogoliubov excitations. In analogy to the Haldane model, no external magnetic field or net flux is required. We construct a generic model based on the two-dimensional (2D) nonlinear Schr\"odinger equation and demonstrate the emergence of topological gaps crossed by chiral Bogoliubov edge modes. Our scheme can be realized in a wide variety of physical systems ranging from nonlinear optical systems to exciton-polariton condensates.
Cite
@article{arxiv.1503.08824,
title = {Chiral Bogoliubons in Nonlinear Bosonic Systems},
author = {Charles-Edouard Bardyn and Torsten Karzig and Gil Refael and Timothy C. H. Liew},
journal= {arXiv preprint arXiv:1503.08824},
year = {2016}
}
Comments
6 pages, 3 figures; with Supplemental Material (5 pages; in source)