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.

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

References in corpus (8)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Topological Acoustics
• Topological Polaritons
• Polariton $\mathbb{Z}$ Topological Insulator
• Topological Polaritons and Excitons in Garden Variety Systems
• Anti-chiral edge states in an exciton polariton strip
• Photonic Versus Electronic Quantum Anomalous Hall Effect

Cited by in corpus (2)

• Optically induced topological spin-valley Hall effect for exciton polaritons
• Polariton gap and gap-stripe solitons in Zeeman lattices