Interaction-induced double-sided skin effect in an exciton-polariton system

The non-Hermitian skin effect can be realized through asymmetric hopping between forward and backward directions, where all the modes of the system are localized at one edge of a finite 1D lattice. Here we show theoretically that in a finite chain of 1D exciton-polariton micropillars with symmetric...

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Main Authors: Xu, Xingran, Xu, Huawen, Mandal, S., Banerjee, R., Ghosh, Sanjib, Liew, Timothy Chi Hin
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2022
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Online Access:https://hdl.handle.net/10356/156264
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1562642023-11-06T06:54:40Z Interaction-induced double-sided skin effect in an exciton-polariton system Xu, Xingran Xu, Huawen Mandal, S. Banerjee, R. Ghosh, Sanjib Liew, Timothy Chi Hin School of Physical and Mathematical Sciences Science::Physics Skin Effect Polariton The non-Hermitian skin effect can be realized through asymmetric hopping between forward and backward directions, where all the modes of the system are localized at one edge of a finite 1D lattice. Here we show theoretically that in a finite chain of 1D exciton-polariton micropillars with symmetric hopping, the inherent nonlinearity of the system can exhibit a double-sided skin (bi-skin) effect based of the fluctuations of the system, where the modes of the system are localized at the two edges of the system. To show the topological origin of such modes, we calculate the winding number. The bi-skin effect can be detected experimentally as an intensity drop at one edge of the chain and an increase at the opposite edge upon an increase of the polariton density under continuous wave excitation. Ministry of Education (MOE) Published version This work was supported by the Singaporean Ministry of Education, via the Tier 2 Academic Research Fund Project No. MOE2018-T2-2-068 2022-04-15T11:00:50Z 2022-04-15T11:00:50Z 2021 Journal Article Xu, X., Xu, H., Mandal, S., Banerjee, R., Ghosh, S. & Liew, T. C. H. (2021). Interaction-induced double-sided skin effect in an exciton-polariton system. Physical Review B, 103, 235306-. https://dx.doi.org/10.1103/PhysRevB.103.235306 2469-9950 https://hdl.handle.net/10356/156264 10.1103/PhysRevB.103.235306 103 235306 en MOE2018-T2-2-068 Physical Review B 10.21979/N9/IMU2HI © 2021 American Physical Society. All rights reserved. This paper was published in Physical Review B and is made available with permission of American Physical Society. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Physics
Skin Effect
Polariton
spellingShingle Science::Physics
Skin Effect
Polariton
Xu, Xingran
Xu, Huawen
Mandal, S.
Banerjee, R.
Ghosh, Sanjib
Liew, Timothy Chi Hin
Interaction-induced double-sided skin effect in an exciton-polariton system
description The non-Hermitian skin effect can be realized through asymmetric hopping between forward and backward directions, where all the modes of the system are localized at one edge of a finite 1D lattice. Here we show theoretically that in a finite chain of 1D exciton-polariton micropillars with symmetric hopping, the inherent nonlinearity of the system can exhibit a double-sided skin (bi-skin) effect based of the fluctuations of the system, where the modes of the system are localized at the two edges of the system. To show the topological origin of such modes, we calculate the winding number. The bi-skin effect can be detected experimentally as an intensity drop at one edge of the chain and an increase at the opposite edge upon an increase of the polariton density under continuous wave excitation.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Xu, Xingran
Xu, Huawen
Mandal, S.
Banerjee, R.
Ghosh, Sanjib
Liew, Timothy Chi Hin
format Article
author Xu, Xingran
Xu, Huawen
Mandal, S.
Banerjee, R.
Ghosh, Sanjib
Liew, Timothy Chi Hin
author_sort Xu, Xingran
title Interaction-induced double-sided skin effect in an exciton-polariton system
title_short Interaction-induced double-sided skin effect in an exciton-polariton system
title_full Interaction-induced double-sided skin effect in an exciton-polariton system
title_fullStr Interaction-induced double-sided skin effect in an exciton-polariton system
title_full_unstemmed Interaction-induced double-sided skin effect in an exciton-polariton system
title_sort interaction-induced double-sided skin effect in an exciton-polariton system
publishDate 2022
url https://hdl.handle.net/10356/156264
_version_ 1783955580931538944