Intrinsic decoherence effect on dynamics of a Λ-type qutrit interacting nonlinearly with a coherent field

In this paper, an intrinsic decoherence model is solved analytically for a A-type qutrit interacting with a coherent field through intensity-dependent coupling. The effects of the qutritcavity interaction, the intrinsic decoherence and the initial coherent field intensity are examined on some quantum phenomena as: atom population inversion, mixedness, entanglement as well as total correlation. It is found that the increase of the physical parameters, the regular oscillatory behavior of the qutrit-population collapses and revivals are changed remarkably. The interaction between the three-level atom and the coherent cavity field generates a strong mixture, negativity entanglement and total correlation (classical + quantum). The growth, the regularity and the stability of these quantum effects depend on the decoherence and the initial coherent cavity intensity. (C) 2021 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Alexandria University.

Automated summary

This paper analytically solves an intrinsic decoherence model of an A-type qutrit interacting with a coherent field through intensity-dependent coupling. The study examines the impact of the qutrit-cavity interaction, intrinsic decoherence, and initial coherent field intensity on various quantum phenomena, revealing significant changes in the quantum effects with the increase of physical parameters. The interaction between the three-level atom and the coherent cavity field results in strong mixture, negativity entanglement, and total correlation, with their growth, regularity, and stability dependent on decoherence and initial coherent cavity intensity.