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Asymmetrical temporal dynamics of edge modes in Su-Schrieffer-Heeger lattice with Kerr nonlinearity

Alharbi, Ghada, Wong, Stephan, Gong, Yongkang and Oh, Sang Soon ORCID: https://orcid.org/0000-0003-3093-7016 2024. Asymmetrical temporal dynamics of edge modes in Su-Schrieffer-Heeger lattice with Kerr nonlinearity. Physical Review Research 6 , L042013. 10.1103/PhysRevResearch.6.L042013

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Abstract

Optical bistability and oscillating phases exist in a Sagnac interferometer and a single ring res- onator made of χ(3) nonlinear medium where the refractive indices are modulated by the light inten- sity due to the Kerr nonlinearity. An array of coupled nonlinear ring resonators behave similarly but with more complexity due to the presence of the additional couplings. Here, we theoretically demon- strate the bifurcation of edge modes which leads to optical bistability in the Su-Schrieffer-Heeger lattice with the Kerr nonlinearity. Additionally, we demonstrate periodic and chaotic switching be- haviors in an oscillating phase resulting from the coupling between the edge mode and bulk modes with different chiralities, i.e., clockwise and counter-clockwise circulations.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: American Physical Society
ISSN: 2643-1564
Funders: European Regional Development Fund
Related URLs:
Date of First Compliant Deposit: 27 September 2024
Date of Acceptance: 7 August 2024
Last Modified: 16 Oct 2024 13:20
URI: https://orca.cardiff.ac.uk/id/eprint/171343

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