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Coherent Topological Polariton Laser

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Title
Coherent Topological Polariton Laser
Author(s)
Harder, Tristan H.; Meng Sun; Egorov, Oleg A.; Ihor Vakulchyk; Beierlein, Johannes; Gagel, Philipp; Emmerling, Monika; Schneider, Christian; Peschel, Ulf; Ivan G. Savenko; Klembt, Sebastian; Höfling, Sven
Publication Date
2021-05
Journal
ACS PHOTONICS, v.8, no.5, pp.1377 - 1384
Publisher
AMER CHEMICAL SOC
Abstract
Topological concepts have been applied to a wide range of fields in order to successfully describe the emergence of robust edge modes that are unaffected by scattering or disorder. In photonics, indications of lasing from topologically protected modes with improved overall laser characteristics were observed. Here, we study exciton-polariton microcavity traps that are arranged in a one-dimensional Su-Schrieffer-Heeger lattice and form a topological defect mode from which we unequivocally observe highly coherent polariton lasing. Additionally, we confirm the excitonic contribution to the polariton lasing by applying an external magnetic field. These systematic experimental findings of robust lasing and high temporal coherence are meticulously reproduced by a combination of a generalized Gross-Pitaevskii model and a Lindblad master equation model. Thus, by using the comparatively simple SSH geometry, we are able to describe and control the exciton-polariton topological lasing, allowing for a deeper understanding of topological effects on microlasers.
URI
https://pr.ibs.re.kr/handle/8788114/9876
DOI
10.1021/acsphotonics.0c01958
ISSN
2330-4022
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > 1. Journal Papers (저널논문)
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