Nonlinear instability and dynamics of polaritons in quantum systems

P K Shukla, B Eliasson

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Abstract

We present analytical and simulation studies of the nonlinear instability and dynamics of an electron–hole/anti-electron (hereafter referred to as polaritons) system, which are common in ultra-small devices (semiconductors and micromechanical systems) as well as in dense astrophysical environments and the next generation intense laser–matter interaction experiments. Starting with three coupled nonlinear equations (two Schrödinger equations for interacting polaritons at quantum scales and the Poisson equation determining the electrostatic interactions and the associated charge separation effect), we demonstrate novel modulational instabilities and nonlinear polaritonic structures. It is suggested that the latter can transport information at quantum scales in high-density, ultracold quantum systems.
Original languageEnglish
Article number98
Number of pages9
JournalNew Journal of Physics
Volume9
Issue number4
DOIs
Publication statusPublished - 20 Apr 2007

Keywords

  • quantum plasma
  • electrons
  • holes
  • polaritons
  • ultra-small devices
  • Schrödinger equations
  • Poisson equations
  • modulational instabilities
  • nonlinear polaritonic structures

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