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

TL;DR

This paper presents a simple, ultrafast method for selective population transfer in four-level atoms using a single chirped few-cycle pulse, with potential applications in molecular systems.

Contribution

It introduces a novel scheme for ultrafast, selective population transfer with high robustness using a single chirped pulse in four-level atoms.

Findings

Achieves near-complete population transfer to a chosen state.

Demonstrates robustness against laser pulse parameter variations.

Potential applicability to molecular systems.

Abstract

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