Selective photoexcitation of confined exciton-polariton vortices

Gaël Nardin, Konstantinos G. Lagoudakis, Barbara Pietka, François Morier-Genoud, Yoan Léger, Benoît Deveaud-Plédran

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We resonantly excite exciton-polariton states confined in cylindrical traps. Using a homodyne detection setup, we are able to image the phase and amplitude of the confined polariton states. We evidence the excitation of vortex states, carrying an integer angular orbital momentum m, analogous to the transverse TEM01∗ “donut” mode of cylindrically symmetric optical resonators. Tuning the excitation conditions allows us to select the charge of the vortex. In this way, the injection of singly charged (m=1 and m=−1) and doubly charged (m=2) polariton vortices is shown. This work demonstrates the potential of in-plane confinement coupled with selective excitation for the topological tailoring of polariton wave functions.
Original languageEnglish
Article number073303
Number of pages1
JournalPhysical Review B
Volume82
Issue number7
DOIs
Publication statusPublished - 15 Aug 2010

Keywords

  • photoexcitation
  • exciton-polariton condensates
  • vortex states
  • optical resonators

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