Geometric Phase of a Moving Four-Level Lambda-Type Atom in a Dissipative Cavity

A.‐S. F. Obada, M. M. A. Ahmed, Ahmed M. Farouk +1 more

Tarek M. El-Shahat, Lamia E. Thabet

S. Abdel‐Khalek, Y. S. El-Saman, Mahmoud Abdel‐Aty

Mahmoud Abdel‐Aty

Bahaaudin Mohammadnoor Raffah, K. Berrada, Eied Mahmoud Khalil +1 more

Abstract In this interferometry the geometrical phase, von-Neumann entropy, and non-classical features of a field interacting with a four-level moving atom in the presence of a Kerr medium were investigated. We highlight the influence of intensity-dependent coupling and energy dissipation to examine the temporal behavior of the geometrical phase, the statistical properties of the field as well as the von-Neumann entropy. The results show that the evolution of system dynamics, atomic von-Neumann entropy, and geometrical phase are strongly influenced by the Kerr medium, field mode structure, and atomic motion. Using empirically available parameters, we test this result, and many new items are discovered.

S. Abdel‐Khalek, Sayed Mohamed Abo-Dahab, Mahmoud Ragab +2 more

Quantum Fisher information (QFI) and geometric phase have recently performed different tasks in quantum information technology. We investigate the statistical quantities as the QFI and entanglement of a three‐level atom in Λ configuration interacting with a quantized field mode by using linear entropy. We study the dynamical behavior of the geometric phase based on the engineering of a three‐level atomic configuration. We analyze the effect of energy dissipation of the dynamical properties of the geometric phase and the QFI as an entanglement quantifier between the three‐level atom and field. We explore the correlation between the engineering geometric phase and QFI in the absence and presence of energy dissipation effect. We have found that the QFI is very sensitive to the effect of the time‐dependent coupling and energy dissipation.