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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 | Schools: | School of Physical and Mathematical Sciences | 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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