Shortcut to adiabatic population transfer in quantum three-level systems: effective two-level problems and feasible counter-diabatic driving

摘要

Shortcut to adiabaticity in various quantum systems has attracted muchattention with the wide applications in quantum information processing andquantum control. In this paper, we concentrate on stimulated Ramanshortcut-to-adiabatic passage in quantum three-level systems. To implementcounter-diabatic driving but without additional coupling, we first reduce thequantum three-level systems to effective two-level problems at largeintermediate-level detuning, or on resonance, apply counter-diabatic drivingalong with the unitary transformation, and eventually modify the pump andStokes pulses for achieving fast and high-fidelity population transfer. Therequired laser intensity and stability against parameter variation are furtherdiscussed, to demonstrate the advantage of shortcuts to adiabaticity.