Coherent topological polariton laser
| Autor: | Monika Emmerling, Christian Schneider, Oleg A. Egorov, I. Vakulchyk, Sven Höfling, Johannes Beierlein, Sebastian Klembt, Tristan H. Harder, Ulf Peschel, Meng Sun, Ivan Savenko, Philipp Gagel |
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| Přispěvatelé: | EPSRC, University of St Andrews. School of Physics and Astronomy, University of St Andrews. Condensed Matter Physics |
| Rok vydání: | 2020 |
| Předmět: |
TK
Physics::Optics FOS: Physical sciences 02 engineering and technology Edge (geometry) Topology 01 natural sciences law.invention TK Electrical engineering. Electronics Nuclear engineering Topological lasing law 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Polariton QD Electrical and Electronic Engineering 010306 general physics QC Physics Condensed Matter::Quantum Gases Condensed Matter - Mesoscale and Nanoscale Physics Exciton-polariton Scattering business.industry Condensed Matter::Other Polariton condensation 3rd-DAS 021001 nanoscience & nanotechnology Laser QD Chemistry Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials QC Physics Photonics 0210 nano-technology business Coherence Su-Schrieffer-Heeger Biotechnology Coherence (physics) Physics - Optics Optics (physics.optics) |
| DOI: | 10.48550/arxiv.2005.14546 |
| Popis: | 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. Comment: 25 pages, 6 figures |
| Databáze: | OpenAIRE |
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