From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain
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 micropill...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/164435 |
| _version_ | 1826109834979704832 |
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| author | Mandal, Subhaskar Banerjee, Rimi Liew, Timothy Chi Hin |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Mandal, Subhaskar Banerjee, Rimi Liew, Timothy Chi Hin |
| author_sort | Mandal, Subhaskar |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T02:24:54Z |
| format | Journal Article |
| id | ntu-10356/164435 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:24:54Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1644352023-01-25T03:10:09Z From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain Mandal, Subhaskar Banerjee, Rimi Liew, Timothy Chi Hin School of Physical and Mathematical Sciences Science::Physics Topological Spin-Hall Effect Non-Hermitian Skin Effect 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. Ministry of Education (MOE) The work was supported by the Ministry of Education, Singapore (Grant No. MOE2019-T2-1-004). 2023-01-25T03:10:09Z 2023-01-25T03:10:09Z 2022 Journal Article 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 2330-4022 https://hdl.handle.net/10356/164435 10.1021/acsphotonics.1c01425 2-s2.0-85124135092 2 9 527 539 en MOE2019-T2-1-004 ACS Photonics © 2022 American Chemical Society. All rights reserved. |
| spellingShingle | Science::Physics Topological Spin-Hall Effect Non-Hermitian Skin Effect Mandal, Subhaskar Banerjee, Rimi Liew, Timothy Chi Hin From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain |
| title | From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain |
| title_full | From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain |
| title_fullStr | From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain |
| title_full_unstemmed | From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain |
| title_short | From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain |
| title_sort | from the topological spin hall effect to the non hermitian skin effect in an elliptical micropillar chain |
| topic | Science::Physics Topological Spin-Hall Effect Non-Hermitian Skin Effect |
| url | https://hdl.handle.net/10356/164435 |
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