dc.contributor.authorAskitopoulos, A.
dc.contributor.authorKalinin, K.
dc.contributor.authorLiew, Timothy Chi Hin
dc.contributor.authorCilibrizzi, P.
dc.contributor.authorHatzopoulos, Z.
dc.contributor.authorSavvidis, P. G.
dc.contributor.authorBerloff, N. G.
dc.contributor.authorLagoudakis, P. G.
dc.identifier.citationAskitopoulos, A., Kalinin, K., Liew, T. C. H., Cilibrizzi, P., Hatzopoulos, Z., Savvidis, P. G., et al. (2016). Nonresonant optical control of a spinor polariton condensate. Physical Review B, 93, 205307-.en_US
dc.description.abstractWe investigate the spin dynamics of polariton condensates spatially separated from and effectively confined by the pumping exciton reservoir. We obtain a strong correlation between the ellipticity of the nonresonant optical pump and the degree of circular polarization (DCP) of the condensate at the onset of condensation. With increasing excitation density we observe a reversal of the DCP. The spin dynamics of the trapped condensate are described within the framework of the spinor complex Ginzburg-Landau equations in the Josephson regime, where the dynamics of the system are reduced to a current-driven Josephson junction. We show that the observed spin reversal is due to the interplay between an internal Josephson coupling effect and the detuning of the two projections of the spinor condensate via transition from a synchronized to a desynchronized regime. These results suggest that spinor polariton condensates can be controlled by tuning the nonresonant excitation density offering applications in electrically pumped polariton spin switches.en_US
dc.format.extent8 p.en_US
dc.relation.ispartofseriesPhysical Review Ben_US
dc.rights©2016 American Physical Society (APS). This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society (APS). The published version is available at: [http://dx.doi.org/10.1103/PhysRevB.93.205307]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.en_US
dc.titleNonresonant optical control of a spinor polariton condensateen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.description.versionPublished versionen_US

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