Backward Cherenkov radiation emitted by polariton solitons in a microcavity wire

Please always quote using this URN: urn:nbn:de:bvb:20-opus-173046
  • Exciton-polaritons in semiconductor microcavities form a highly nonlinear platform to study a variety of effects interfacing optical, condensed matter, quantum and statistical physics. We show that the complex polariton patterns generated by picosecond pulses in microcavity wire waveguides can be understood as the Cherenkov radiation emitted by bright polariton solitons, which is enabled by the unique microcavity polariton dispersion, which has momentum intervals with positive and negative group velocities. Unlike in optical fibres andExciton-polaritons in semiconductor microcavities form a highly nonlinear platform to study a variety of effects interfacing optical, condensed matter, quantum and statistical physics. We show that the complex polariton patterns generated by picosecond pulses in microcavity wire waveguides can be understood as the Cherenkov radiation emitted by bright polariton solitons, which is enabled by the unique microcavity polariton dispersion, which has momentum intervals with positive and negative group velocities. Unlike in optical fibres and semiconductor waveguides, we observe that the microcavity wire Cherenkov radiation is predominantly emitted with negative group velocity and therefore propagates backwards relative to the propagation direction of the emitting soliton. We have developed a theory of the microcavity wire polariton solitons and of their Cherenkov radiation and conducted a series of experiments, where we have measured polariton-soliton pulse compression, pulse breaking and emission of the backward Cherenkov radiation.show moreshow less

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Metadaten
Author: D.V. Skryabin, Y.V. Kartashov, O.A. Egorov, M. Sich, J.K. Chana, L.E. Tapia Rodriguez, P.M. Walker, E. Clarke, B. Royall, M.S. Skolnick, D.N. Krizhanovskii
URN:urn:nbn:de:bvb:20-opus-173046
Document Type:Journal article
Faculties:Fakultät für Physik und Astronomie / Physikalisches Institut
Language:English
Parent Title (English):Nature Communications
Year of Completion:2017
Volume:8
Article Number:1554
Source:Nature Communications (2017) 8:1554. https://doi.org/10.1038/s41467-017-01751-6
DOI:https://doi.org/10.1038/s41467-017-01751-6
Pubmed Id:https://pubmed.ncbi.nlm.nih.gov/29146904
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Tag:physics; polaritons; solitons
Release Date:2021/05/25
EU-Project number / Contract (GA) number:320570
OpenAIRE:OpenAIRE
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International