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Chiral Bogoliubov excitations in nonlinear bosonic systems

Bardyn, Charles-Edouard and Karzig, Torsten and Refael, Gil and Liew, Tomothy C. H. (2016) Chiral Bogoliubov excitations in nonlinear bosonic systems. Physical Review B, 93 (2). Art. No. 020502. ISSN 1098-0121. doi:10.1103/PhysRevB.93.020502.

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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 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.

Item Type:Article
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URLURL TypeDescription Material Paper
Karzig, Torsten0000-0003-0834-0547
Alternate Title:Chiral Bogoliubons in Nonlinear Bosonic Systems
Additional Information:© 2016 American Physical Society. Received 6 April 2015; revised manuscript received 29 September 2015; published 5 January 2016. T.L. thanks Y. Chong and B. Zhang for encouraging discussions. This work was funded by the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center with the support of the Gordon and Betty Moore Foundation (Grant No. GBMF1250). G.R. acknowledges support from NSF Grant No. DMR-1410435. Financial support from the Swiss National Science Foundation (SNSF) is also gratefully acknowledged.
Group:Institute for Quantum Information and Matter
Funding AgencyGrant Number
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
Gordon and Betty Moore FoundationGBMF1250
Swiss National Science Foundation (SNSF)UNSPECIFIED
Issue or Number:2
Classification Code:PACS: 03.75.Lm, 42.65.-k, 71.36.+c, 67.85.Hj
Record Number:CaltechAUTHORS:20150427-125004319
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Official Citation:Chiral Bogoliubov excitations in nonlinear bosonic systems Charles-Edouard Bardyn, Torsten Karzig, Gil Refael, and Timothy C. H. Liew Phys. Rev. B 93, 020502(R) – Published 5 January 2016
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57013
Deposited By: Ruth Sustaita
Deposited On:27 Apr 2015 20:10
Last Modified:10 Nov 2021 21:06

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