THERMAL SCIENCE

International Scientific Journal

Hammad Alotaibi

,

Eied Mahmoud Khalil

,

Sayed Abdel-Khalek

,

Abdullah Al-Barakaty

INFLUENCE OF CLASSICAL FIELD ON ENTANGLEMENT AND PHOTON STATISTICS OF N-LEVEL ATOM INTERACTING WITH A TWO TWO-LEVEL ATOM

ABSTRACT
In this study, we consider three interacting atoms, one of them represented by N-level atom based on SU(2) Lie algebra and the other represented by a two two-level atom in presence of the external field. The effect of the external field on the dynamics of the proposed system is discussed in detail for certain values for the external field. The dynamical expression of the observable operators is obtained by using the Heisenberg equation of motion. The general solution via solving Schrodinger equation is obtained. The fidelity and concurrence formula as a measure of entanglement between two two-level atom are calculated and discussed in detail. We explore the sudden death and sudden birth phenomena with and without the presence of external field. Finally, we compare the results of the fidelity, concurrence and second-order correlation function for some values of the initial state and the external field parameters.
KEYWORDS
entanglement, external classical field, fidelity, concurrence, second order correlation
PAPER SUBMITTED: 2020-05-03
PAPER REVISED: 2020-06-05
PAPER ACCEPTED: 2020-06-15
PUBLISHED ONLINE: 2020-10-25
DOI REFERENCE: https://doi.org/10.2298/TSCI20S1177A
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2020, VOLUME 24, ISSUE Supplement 1, PAGES [S177 - S186]
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Influence of classical field on entanglement and photon statistics of n-level atom interacting with a two two-level atom

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