title: Formation and propagation of matched and coupled ultraslow optical soliton pairs in a four-level double- system.
abstract: We investigate the simultaneous formation and stable propagation of ultraslow optical soliton pairs in a lifetime broadened four-state atomic system under double-Lambda excitation with large one- and two-photon detunings. We show that detrimental probe field distortions due to strong dispersion effects under weak driving conditions can be well balanced by self- and cross-phase modulation effects, leading to a pair of temporal, group velocity, and amplitude matched ultraslow optical solitons of different frequencies.
authors.affiliation: Electron and Optical Physics Division, NIST, Gaithersburg, Maryland 20899, USA.
authors.forename: L
authors.initials: L
authors.lastname: Deng
authors.forename: M G
authors.initials: MG
authors.lastname: Payne
authors.forename: Guoxiang
authors.initials: G
authors.lastname: Huang
authors.forename: E W
authors.initials: EW
authors.lastname: Hagley