Controlling four-wave mixing and six-wave mixing in a multi-Zeeman-sublevel atomic systemwith electromagnetically induced transparency

摘要

We theoretically investigate the dually dressed electromagnetically induced transparency, and the multi-dressed four-wave mixing (FWM) and six-wave mixing (SWM) processes in an inverted-Y-type atomic systemwith Zeeman sublevels. The results show that the Zeeman degeneracy of the dark states can be lifted by thedressing field as its intensity is increased. Moreover, the derived analytical expressions indicate that one can,for example, selectively create secondary dark states on the multi-Zeeman-sublevel dark states (by tuning thecoupling field), distinguish two different types of dark states generated in two FWM processes (by properlycontrolling the coupling field intensity), and selectively enhance multi-FWM signals coming from variouspaths consisting of split Zeeman sublevels (by tuning the dressing field). The SWM signals can be eitherenhanced or suppressed by controlling the dressing field.