Control for dynamics of two coupled Bose–Einstein condensate solitons by potential deviation

The control of the potential deviation for two coupled Bose–Einstein condensate solitons is investigated by the variational approach, and the effects of the potential deviation on dynamics of the two Bose–Einstein condensate solitons are discussed. The potential deviation resets the stationary state, affects the existence time, and changes the switching and self-trapping effect on the Bose–Einstein condensate solitons. The results are confirmed by the evolution of the atom population transferring ratio, and demonstrate a new way to guide the motion of the two Bose–Einstein condensate solitons.