THERMAL SCIENCE

International Scientific Journal

Jamal S. Anwar

,

Muhammad Ibrahim

,

Abdul S. Khalek

,

Muhammad Ilays

,

Haifa S. Alqannas

,

Khalid M. Khan

QUANTUM ENTANGLEMENT OF N-LEVEL ATOMS UNDER THE INFLUENCE OF THERMAL ENVIRONMENTAL

ABSTRACT
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.
KEYWORDS
quantum entanglement, quantum Fisher information, Stark effect, von Neumann entropy
PAPER SUBMITTED: 2024-06-20
PAPER REVISED: 2024-10-03
PAPER ACCEPTED: 2024-10-29
PUBLISHED ONLINE: 2025-01-25
DOI REFERENCE: https://doi.org/10.2298/TSCI2406955A
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 6, PAGES [4955 - 4967]
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Quantum entanglement of N-level atoms under the influence of thermal environmental

2025 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence