TY - JOUR
TI - Quantum entanglement of N-level atoms under the influence of thermal environmental
AU - Anwar Jamal S
AU - Ibrahim Muhammad
AU - Khalek Abdul S
AU - Ilays Muhammad
AU - Alqannas Haifa S
AU - Khan Khalid M
JN - Thermal Science
PY - 2024
VL - 28
IS - 6
SP - 4955
EP - 4967
PT - Article
AB - This study investigates the quantum features of entanglement in N-level  atomic systems subjected to varying Stark effect (SE) and intrinsic  decoherence (ID) parameters. The quantum entanglement (QE) diminishes with  increasing SE parameter, while the Quantum Fisher information (QFI)  exhibits complex dynamics with no consistent trend across N-levels. Notably,  distinct phase factor values influence the QFI differently, with certain  phase factors yielding higher QFI values. The ID proves influential, causing  a decline in both QFI and von Neumann entropy (VNE) magnitudes. The QFI  experiences oscillations, dampening with heightened decoherence, and decays  more rapidly than VNE. Additionally, the VNE displays differential behaviors  among N-level systems, with the 3-level system maintaining a sustained  steady-state compared to the 4- and 5-level systems. The QFI and VNE exhibit  periodic behavior across a range of Stark parameter values and phase  factors. These findings contribute to a nuanced understanding of  entanglement dynamics in multi-level atomic systems under various  influencing factors.