Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/151829
Title: Spontaneously coherent orbital coupling of counterrotating exciton polaritons in annular perovskite microcavities
Authors: Wang, Jun
Xu, Huawen
Su, Rui
Peng, Yutian
Wu, Jinqi
Liew, Timothy Chi Hin
Xiong, Qihua
Keywords: Science::Physics
Issue Date: 2021
Source: Wang, J., Xu, H., Su, R., Peng, Y., Wu, J., Liew, T. C. H. & Xiong, Q. (2021). Spontaneously coherent orbital coupling of counterrotating exciton polaritons in annular perovskite microcavities. Light: Science & Applications, 10(1), 45-. https://dx.doi.org/10.1038/s41377-021-00478-w
Project: MOE2018-T3-1-002
MOE2017-T2-1-040
MOE2017-T2-1-001
MOE2018-T2-02-068
RG103/15
RG113/16
Journal: Light: Science & Applications
Abstract: Exciton-polariton condensation is regarded as a spontaneous macroscopic quantum phenomenon with phase ordering and collective coherence. By engineering artificial annular potential landscapes in halide perovskite semiconductor microcavities, we experimentally and theoretically demonstrate the room-temperature spontaneous formation of a coherent superposition of exciton-polariton orbital states with symmetric petal-shaped patterns in real space, resulting from symmetry breaking due to the anisotropic effective potential of the birefringent perovskite crystals. The lobe numbers of such petal-shaped polariton condensates can be precisely controlled by tuning the annular potential geometry. These petal-shaped condensates form in multiple orbital states, carrying locked alternating π phase shifts and vortex–antivortex superposition cores, arising from the coupling of counterrotating exciton-polaritons in the confined circular waveguide. Our geometrically patterned microcavity exhibits promise for realizing room-temperature topological polaritonic devices and optical polaritonic switches based on periodic annular potentials.
URI: https://hdl.handle.net/10356/151829
ISSN: 2095-5545
DOI: 10.1038/s41377-021-00478-w
DOI (Related Dataset): 10.21979/N9/UNX5DX
Schools: School of Physical and Mathematical Sciences 
Organisations: MajuLab @ NTU
Research Centres: CNRS International NTU THALES Research Alliances 
Rights: © 2021 The Author(s). Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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