Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/164435
Title: From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain
Authors: Mandal, Subhaskar
Banerjee, Rimi
Liew, Timothy Chi Hin
Keywords: Science::Physics
Issue Date: 2022
Source: Mandal, S., Banerjee, R. & Liew, T. C. H. (2022). From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain. ACS Photonics, 9(2), 527-539. https://dx.doi.org/10.1021/acsphotonics.1c01425
Project: MOE2019-T2-1-004 
Journal: ACS Photonics
Abstract: The topological spin-Hall effect causes different spins to propagate in opposite directions based on Hermitian physics. The non-Hermitian skin effect causes the localization of a large number of modes of a system at its edges. Here we propose a system based on exciton-polariton elliptical micropillars hosting both the effects. The polarization splitting of the elliptical micropillars gives rise to the topological spin-Hall effect in a one dimensional lattice. When a circularly polarized external incoherent laser is used to imbalance effective decay rates of the different spin polarizations, the system transits to a non-Hermitian regime showing the skin effect. These effects have implications for robust polariton transport as well as the deterministic formation of multiply charged vortices and persistent currents.
URI: https://hdl.handle.net/10356/164435
ISSN: 2330-4022
DOI: 10.1021/acsphotonics.1c01425
Rights: © 2022 American Chemical Society. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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