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We propose a general approach to speed up quantum adiabatic processes for fast quantum information transfer in a three-level system. In the approach, by using an intermediate Hamiltonian which is assumed to be formed by the original Hamiltonian H-0(t) and its counterdiabatic driving Hamiltonian H-cd(t) with a simple linear relationship, we design exact dynamics following the eigenstates of the intermediate Hamiltonian to speed up the desired population processes. We apply the present approach to a three-level system to show that by suitably choosing the parameters, not only the population processes could be sped up, but also the existence of the undesired off-diagonal terms, the populations of the intermediate states, and even the shapes of the pulses would be controllable in the speeding up scheme.
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LASER PHYSICS LETTERS
ISSN: 1612-2011
Year: 2024
Issue: 12
Volume: 21
1 . 4 0 0
JCR@2023
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ESI Highly Cited Papers on the List: 0 Unfold All
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