Non-Hermitian wave packet approximation for coupled two-level systems in weak and intense fields

Raiju Puthumpally-Joseph, Maxim Sukharev, Eric Charron

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

We introduce a non-Hermitian Schrödinger-type approximation of optical Bloch equations for two-level systems. This approximation provides a complete and accurate description of the coherence and decoherence dynamics in both weak and strong laser fields at the cost of losing accuracy in the description of populations. In this approach, it is sufficient to propagate the wave function of the quantum system instead of the density matrix, providing that relaxation and dephasing are taken into account via automatically adjusted time-dependent gain and decay rates. The developed formalism is applied to the problem of scattering and absorption of electromagnetic radiation by a thin layer comprised of interacting two-level emitters.

Original languageEnglish (US)
Article number154109
JournalJournal of Chemical Physics
Volume144
Issue number15
DOIs
StatePublished - Apr 21 2016

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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