title: Slow optical soliton pairs via electron spin coherence in a quantum well waveguide.
abstract: In this paper, we theoretically investigate the propagation properties of probe and mixing fields in a quantum well waveguide. This waveguide is driven by two strong control (pumping and coupling) fields and a weak probe field. Under appropriate parameters condition, the electron spin coherence can suppress the absorption and enhance the nonlinear susceptibilities of the probe (or mixing) field. This study reveals that probe (or mixing) field can form soliton pairs and propagate in the quantum well waveguide with slow group velocity. We also study the soliton collision and dynamics evolution. The results show that the propagation of soliton can be strongly modified by the electron spin coherence.
authors.affiliation: Department of Physics, Hubei Normal University, Huangshi 435002, China. jibl@foxmail.com
authors.forename: Ji-Bing
authors.initials: JB
authors.lastname: Liu
authors.forename: Na
authors.initials: N
authors.lastname: Liu
authors.forename: Chuan-Jia
authors.initials: CJ
authors.lastname: Shan
authors.forename: Tang-Kun
authors.initials: TK
authors.lastname: Liu
authors.forename: Yan-Xia
authors.initials: YX
authors.lastname: Huang