Abstract
The present research paper considers a three-level atom (3LA) that interacts with a field mode primarily in a photon-added coherent state of Morse potential (PACSMP). The dynamics of entanglement, the photon statistics, and the quantum Fisher information are investigated. The statistics of field photons are discussed by evaluating the Mandel parameter. We check the influence of the energy dissipation and intensity-dependent function. Finally, we detect the relationship between the entanglement, the field’s nonclassical characteristics, and atomic quantum Fisher information throughout the evolution of time. The findings illustrate the important role of the number of added photons and CSMP in affecting the entanglement’s time evolution, the quantum Fisher information, and the Mandel parameter. Based on the obtained results, we reached significant physical phenomena, including the sudden birth and death of the nonlocal correlation between atom-Morse potential field structures.
Highlights
The Morse Potential (MP) [1] is considered to be a realistic and simple three-parameter anharmonic potential model
The dynamics of a quantum system that initially had a four-level atom and a field in the CSMP were introduced, where the nonclassical properties of the field were discussed based on an evaluation of the Mandel parameter [17]
The present paper considers a generalized model according to the interaction between a three-level atomic system and the field initially prepared for exited state of CSMP
Summary
The Morse Potential (MP) [1] is considered to be a realistic and simple three-parameter anharmonic potential model. The dynamics of a quantum system that initially had a four-level atom and a field in the CSMP were introduced, where the nonclassical properties of the field were discussed based on an evaluation of the Mandel parameter [17]. We assume that the coefficients of coupling between the mode field and 3LA are equal, represented as β 1 = β 2 = β This helps in defining the effect of energy dissipation on the considered structure through the nonzero value of the parameter γ. As the reduced atomic density (8) was obtained, the other quantities related to the dynamical performance of the degree of entanglement, the quantum Fisher information, and the photon statistics of the field can be investigated [35].
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