title: The double dark resonance in a cold gas of Cs atoms and molecules.
abstract: We theoretically investigated the properties of the effective four-level stimulated Raman adiabatic passage scheme in a cold gas of Cs atoms and molecules, where exists the tunnelling coupling between two excited molecular states due to the 0(g)- (6S,6P(3/2)) double well structure. The double dark resonance is predicted in the absorption spectrum when the tunnelling coupling strength is large enough. The double dark resonance not only reveals the formation of the ultra-cold molecules, but also provides further evidence for the tunnelling as one effective coupling mechanism between the two excited molecular states. The effect of the various experimental conditions on this phenomena has been discussed.
authors.affiliation: Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan, Shanxi 030006, China.
authors.forename: ZhiFang
authors.initials: Z
authors.lastname: Feng
authors.forename: WeiDong
authors.initials: W
authors.lastname: Li
authors.forename: LianTuan
authors.initials: L
authors.lastname: Xiao
authors.forename: SuoTang
authors.initials: S
authors.lastname: Jia
mesh_terms: D000042:Absorption; D002586:Cesium / Q000737:chemistry*; D003080:Cold Temperature; D005740:Gases; D007477:Ions; D007834:Lasers; D015233:Models, Statistical; D055095:Optics and Photonics; D011789:Quantum Theory; D012542:Scattering, Radiation; D013059:Spectrum Analysis, Raman; D013696:Temperature
chemical_list: D005740:Gases; D007477:Ions; D002586:Cesium