title: Bright two-color tripartite entanglement with second harmonic generation.
abstract: The bright two-color tripartite entanglement is investigated in the process of type II second harmonic generation (SHG) operating above threshold. The two pump fields and the second harmonic field are proved to be entangled, and the dependence of the entanglement degree on pump parametersigma and normalized frequency Omega is also analyzed.
authors.affiliation: State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan, PR China.
authors.forename: Shuqin
authors.initials: S
authors.lastname: Zhai
authors.forename: Rongguo
authors.initials: R
authors.lastname: Yang
authors.forename: Kui
authors.initials: K
authors.lastname: Liu
authors.forename: Hailong
authors.initials: H
authors.lastname: Zhang
authors.forename: Junxiang
authors.initials: J
authors.lastname: Zhang
authors.forename: Jiangrui
authors.initials: J
authors.lastname: Gao
mesh_terms: D003116:Color; D003124:Colorimetry / Q000379:methods*; D003198:Computer Simulation; D008027:Light; D008962:Models, Theoretical; D012542:Scattering, Radiation