Ultrafast exciton-polariton scattering towards the Dirac points

Research output: Contribution to journalArticle


  • V. M. Kovalev
  • I. G. Savenko
  • I. V. Iorsh

Research units

  • Russian Academy of Sciences
  • Novosibirsk State Technical University
  • St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO)
  • Australian National University


Using the Feynman-Dyson diagram technique, we study nonlinear polariton-polariton scattering in a two-dimensional micropillar-based optical superlattice with hexagonal symmetry. We demonstrate that both the emerging polariton chirality and the loop Feynman diagrams up to infinite order should be strictly accounted for in the evaluation of the self-energy of the system. Further, we explicitly show that in such a design the time of polariton scattering towards the Dirac points can be drastically decreased which can be used, for instance, in engineering novel classes of polariton lasers with substantially reduced thresholds.


Original languageEnglish
Article number105301
Number of pages5
JournalJournal of physics: Condensed matter
Issue number10
Publication statusPublished - 16 Mar 2016
MoE publication typeA1 Journal article-refereed

    Research areas

  • exciton polaritons, linear dispersion, Feynman-Dyson technique, Dirac point, graphene materials

ID: 9172991