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dc.contributor.authorMa, Xuekai
dc.contributor.authorKartashov, Yaroslav V.
dc.contributor.authorGao, Tingge
dc.contributor.authorTorner Sabata, Lluís
dc.contributor.authorSchumacher, Stefan
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationMa, X. [et al.]. Spiraling vortices in exciton-polariton condensates. "Physical review B", 23 Juliol 2020, vol. 102, núm. 4, article 045309, p. 1-7.
dc.description.abstractWe introduce the phenomenon of spiraling vortices in driven-dissipative (nonequilibrium) exciton-polariton condensates excited by a nonresonant pump beam. At suitable low pump intensities, these vortices are shown to spiral along circular trajectories whose diameter is inversely proportional to the effective mass of the polaritons, while the rotation period is mass independent. Both the diameter and rotation period are inversely proportional to the pump intensity. Stable spiraling patterns in the form of complexes of multiple mutually interacting vortices are also found. At elevated pump intensities, which create a stronger homogeneous background, we observe more complex vortex trajectories resembling Spirograph patterns.
dc.description.sponsorshipThis work was supported by the Deutsche Forschungsgemeinschaft (DFG) through the collaborative research center TRR142 (project A04, Grant No. 231447078) and Heisenberg program (Grant No. 270619725) and by the Paderborn Center for Parallel Computing (PC2). X.M. further acknowledges support from the National Natural Science Foundation of China (Grant No. 11804064) and the hospitality during his stay at ICFO-Institut de Ciències Fotòniques. Y.V.K. and L.T. acknowledge support from the Severo Ochoa Excellence Programme, Fundacio Cellex, Fundacio Mir-Puig, and CERCA/Generalitat de Catalunya. T.G. acknowledges support from the National Natural Science Foundation of China (Grant No. 11874278).
dc.format.extent7 p.
dc.publisherAmerican Physical Society (APS)
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica
dc.subject.otherEffective mass
dc.titleSpiraling vortices in exciton-polariton condensates
dc.contributor.groupUniversitat Politècnica de Catalunya. FOTONICA - Grup de Recerca de Fotònica
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorMa, X.; Kartashov, Y.V.; Gao, T.; Torner, L.; Schumacher, S.
local.citation.publicationNamePhysical review B
local.citation.number4, article 045309

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