2005/10/31 by C. Ottaviani, Carlo Ottaviani, Stojan Rebic +5 · 1 citation
Engineering · Physics and Astronomy · #Nonlinear Photonic Systems #Plasmonic and Surface Plasmon Research #Quantum optics and atomic interactions #physics.atom-ph #physics.optics #quant-ph
paper · pdf · doi:10.1140/epjd/e2006-00164-5
published as Eur. Phys. J. D 40, 281 (2006). · New version: section on pulse propagation added, reference list expanded; 17 pages, 15 figures
arxiv created 2006/01/25 · openalex publication_date 2006/07/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29
The interaction of a five-level atomic system involving electromagnetically induced transparency with four light fields is investigated. Two different light-atom configurations are considered, and their efficiency in generating large nonlinear cross-phase shifts compared. The dispersive properties of those schemes are analyzed in detail, and the conditions leading to group velocity matching for two of the light fields identified. An analytical treatment based on amplitude equations is used in order to obtain approximate solutions for the susceptibilities, ehich are shown to fit well with the numerical simulations of the full Bloch equations in a large parameter region.