(color online) (a) Time-dependent local population on the right proton, calculated by two-state model P_R (blue dashed line), by numerical integration (red solid line) and the local population on the left proton by numerical integration (mauve dash–dotted line) in the G case. The electric field of the laser pulse is presented in the figure (green dotted line). (b) and (c) Time-dependent local population on the right proton, calculated by numerical integration (red solid line) and the interference C between the two phase-adiabatic states (green dash line) throughout one laser cycle in the G case and in the U case, respectively. (d) and (e) Evolving relative phase difference between the wave function centered on each proton in the G case and the U case, respectively.