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dc.contributor.authorZhang, Yiqi
dc.contributor.authorKartashov, Yaroslav V.
dc.contributor.authorZhang, Yanpeng
dc.contributor.authorTorner Sabata, Lluís
dc.contributor.authorSkryabin, Dmitry V.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationZhang, Y., Kartashov, Y.V., Zhang, Y., Torner, L., Skryabin, D. Inhibition of tunneling and edge state control in polariton topological insulators. "APL Photonics", 1 Desembre 2018, vol. 3, p. 1-9.
dc.description.abstractWe address the inhibition of tunneling in polariton condensates confined in a potential landscape created by a honeycomb array of microcavity pillars in the presence of spin- orbit coupling and Zeeman splitting in the external magnetic field. The coupling rate between the microcavity pillars can be strongly impacted even by weak out-of-phase temporal modulations of the depths of the corresponding potential wells. When such a modulation is implemented in truncated honeycomb arrays that realize a polari- ton topological insulator, which supports unidirectional edge states in the presence of spin-orbit coupling and Zeeman splitting, it allows controlling the velocity of the states. The origin of the phenomenon is the dynamical modulation with a proper fre- quency, which notably changes the dispersion of the system and the group velocity of edge states. We show that such a control is possible for modulation frequencies close to resonances for the inhibition of tunneling in a two-well configuration. Edge states considerably slow down, and even stop completely, when the modulation frequency approaches a resonant value, while above such a frequency, splitting of the edge states into wavepackets moving with different velocities occurs
dc.format.extent9 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica
dc.titleInhibition of tunneling and edge state control in polariton topological insulators
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)
upcommons.citation.authorZhang, Y., Kartashov, Y.V., Zhang, Y., Torner, L., Skryabin, D.
upcommons.citation.publicationNameAPL Photonics

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