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We report and propose a simple scheme to achieve the ultrafast and selectivepopulation transfer in four-level atoms by utilizing a single frequency chirpedfew-cycle pulse. It is demonstrated that the almost complete population may betransferred to the preselected state of atoms just by manipulating the socalled chirp offset parameter. The robustness of the scheme against thevariation of laser pulse parameters is also investigated. The proposed schememay also be useful for the selective population transfer in molecules.

Ultrafast and selective coherent population transfer in four-level atoms by a single frequency chirped few-cycle pulse