Exciton-Polariton Topological Insulator with an Array of Magnetic Dots

Abstract

Recently there have been several proposals on exciton-polariton topological insulators, most requiring strong external magnetic fields induced by bulky superconducting coils. We propose an alternate design for a polariton topological insulator, where excitons are in a proximity of an additional layer of a ferromagnetic material with a predefined magnetic moment located between the pillars of the cavity. Our design supports a variety of topological phases and transitions between Chern numbers $\pm 2$ and $\pm 1$ by varying either the magnetic moment of the ferromagnetic material or the spin-orbit coupling between different spin projections, thus enabling compact polariton devices harnessing switchable topological edge modes.

arXiv commentManuscript: 6 pages, 4 figures. Accepted in Phys. Rev. Applied

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Cited by in corpus (7)

• Non-reciprocal transport of Exciton-Polaritons in a non-Hermitian chain
• Coherent topological polariton laser
• Non-Hermitian Topological End-Mode Lasing in Polariton Systems
• From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain
• Optically induced topological spin-valley Hall effect for exciton polaritons
• Spin-polarized antichiral exciton-polariton edge states
• Polariton gap and gap-stripe solitons in Zeeman lattices