Effect of photonic spin-orbit coupling on the topological edge modes of a Su-Schrieffer-Heeger chain

Abstract

We study the effect of photonic spin-orbit coupling (SOC) in micropillar lattices on the topological edge states of a one-dimensional chain with a zigzag geometry, corresponding to the Su-Schrieffer-Heeger model equipped with an additional internal degree of freedom. The system combines the strong hopping anisotropy of the $p$-type pillar modes with the large TE-TM splitting in Bragg microcavities. By resolving the photoluminescence emission in energy and polarization we probe the effects of the resulting SOC on the spatial and spectral properties of the edge modes. We find that the edge modes feature a fine structure of states that penetrate by different amounts into the bulk of the chain, depending on the strength of the SOC terms present, thereby opening a route to manipulation of the topological states in the system.

5 pages, 3 figures (main text); 8 pages, 5 figures (supplementary material)

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• Topological Photonic Tamm-States and the Su-Schrieffer-Heeger Model
• Topological and non-topological features of generalized Su-Schrieffer-Heeger models
• Polaritonic Tamm states induced by cavity photons
• Nonhermitian defect states from lifetime differences
• Topological states and interplay between spin-orbit and Zeeman interactions in a spinful Su-Schrieffer-Heeger nanowire
• Topological gap solitons in a 1D non-Hermitian lattice
• Renormalization approach to the analysis and design of Hermitian and non-Hermitian interfaces
• Polariton surface solitons under a resonant pump
• Topological phase transition in an all-optical exciton-polariton lattice
• Microcavity polaritons for topological photonics
• Topological Photonics on a Small Scale