Entanglement of a system of indirectly linked two-coupled-cavity through an optical fiber for single excitation atomic states in the presence of external classical fields.

Hanoura S. A.; Ahmed M. M. A.; Khalil E. M.Obada A.-S. F.

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Entanglement of a system of indirectly linked two-coupled-cavity through an optical fiber for single excitation atomic states in the presence of external classical fields.

机译：Entanglement of a system of indirectly linked two-coupled-cavity through an optical fiber for single excitation atomic states in the presence of external classical fields.

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Abstract The dynamics of the quantum entropies of a system of two cavities coupled by an optical fiber, each of which contains a two-level atom interacting with a single electromagnetic field in addition to an external classical field, is investigated. The entirely Hamiltonian is simplified within two canonical transformations. Effective Hamiltonians in three different limiting regimes approximations: namely large strength of the optical fiber coupling (SOFC), large detunig, and comparable detuning and SOFC are derived. The distant successive atoms are respectively prepared in the quantum and ground states while all fields are prepared in their vacuum states. The analytical expressions for the solution of the Schrödinger equation in all are derived. The degree of entanglement (DEM) is studied by von Neumann atomic entropies: atom-atom DEM, 1stdocumentclass12pt{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} begin{document}$$1^{st}$$end{document} atom-(the rest subsystems), and , 2nddocumentclass12pt{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} begin{document}$$2^{nd}$$end{document} atom-(the rest subsystems). The influences of both the SOFC and the detuning on the evolutions of the DEM are analyzed. General conclusions reached are illustrated by numerical results.

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《Optical and Quantum Electronics》 |2022年第12期|共5页
作者
Hanoura S. A.; Ahmed M. M. A.; Khalil E. M.Obada A.-S. F.;
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作者单位

Sinai University;

Al-Azhar University;

Taif University;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学;
关键词
External classical field; Entanglement; Von Neumann atomic entropy; Optical fiber modes; Effective Hamiltonians; Time average theory;

Entanglement of a system of indirectly linked two-coupled-cavity through an optical fiber for single excitation atomic states in the presence of external classical fields.

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