  Fine control of the dynamics of a quantum system is the key element to
perform quantum information processing and coherent manipulations for atomic
and molecular systems. In this paper we propose a control protocol using a
tangent-pulse driven model and demonstrate that it indicates a desirable
design, i.e., of being both fast and accurate for population transfer. As
opposed to other existing strategies, a remarkable character of the present
scheme is that high velocity of the nonadiabatic evolution itself not only will
not lead to unwanted transitions but also can suppress the error caused by the
truncation of the driving pulse.
