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Title: Chiral Bogoliubov excitations in nonlinear bosonic systems
Authors: Bardyn, Charles-Edouard
Karzig, Torsten
Refael, Gil
Liew, Timothy Chi Hin
Keywords: Optomechanics
Issue Date: 2016
Source: Bardyn, C.-E., Karzig, T., Refael, G., & Liew, T. C. H. (2016). Chiral Bogoliubov excitations in nonlinear bosonic systems. Physical Review B, 93(2), 020502-.
Series/Report no.: Physical Review B
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 nonlinear Schrödinger 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.
ISSN: 2469-9950
DOI: 10.1103/PhysRevB.93.020502
Rights: © 2016 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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