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Coherent Topological Polariton Laser

Harder TH, Sun M, Egorov OA, Vakulchyk I, Beierlein J, Gagel P, Emmerling M, Schneider C, Peschel U, Savenko IG, Klembt S, Hofling S (2021)

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Publication Type: Journal article

Publication year: 2021

Journal

Book Volume: 8

Pages Range: 1377-1384

Journal Issue: 5

DOI: 10.1021/acsphotonics.0c01958

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.

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How to cite

APA:

Harder, T.H., Sun, M., Egorov, O.A., Vakulchyk, I., Beierlein, J., Gagel, P.,... Hofling, S. (2021). Coherent Topological Polariton Laser. ACS Photonics, 8(5), 1377-1384. https://doi.org/10.1021/acsphotonics.0c01958

MLA:

Harder, Tristan H., et al. "Coherent Topological Polariton Laser." ACS Photonics 8.5 (2021): 1377-1384.

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