Complete and robust population transfer between the two ground states of a three-state loop quantum system by amplitude composite pulse control
Phys. Rev. A 112, 023120 – Published 27 August, 2025
DOI: https://doi.org/10.1103/8f8d-vbzw
Abstract
This work presents a method for achieving complete, robust, and efficient population transfer between the two ground states in a three-level loop quantum system. The approach utilizes composite pulse sequences by effectively mapping the three-state system onto an equivalent two-level system. This transformation allows the use of broadband composite pulses designed initially for conventional two-state quantum systems. Unlike traditional implementations, the composite pulses in the three-level system are not controlled through phase adjustments; instead, they are realized via the amplitude ratio of the Rabi frequencies.
