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Single-atom entropy squeezing for two two-level atoms interacting with a single-mode radiation field

El-Orany, Faisal A.A and Wahiddin, Mohamed Ridza and Obada, Abdel-Shafi F. (2008) Single-atom entropy squeezing for two two-level atoms interacting with a single-mode radiation field. Optics Communications, 281 (10). pp. 2854-2863. ISSN 0030-4018

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Abstract

In this paper we consider a system of two two-level atoms interacting with a single-mode quantized electromagnetic field in a lossless resonant cavity via l-photon-transition mechanism. The field and the atoms are initially prepared in the coherent state and the excited atomic states, respectively. For this system we investigate the entropy squeezing, the atomic variances, the von Neumann entropy and the atomic inversions for the single-atom case. Also we comment on the relationship between spin squeezing and linear entropy. We show that the amounts of the nonclassical effects exhibited in the entropy squeezing for the present system are less than those produced by the standard Jaynes–Cummings model. The entropy squeezing can give information on the corresponding von Neumann entropy. Also the nonclassical effects obtained from the asymmetric atoms are greater than those obtained from the symmetric ones. Finally, the entropy squeezing gives better information than the atomic variances only for the asymmetric atoms.

Item Type: Article (Journal)
Additional Information: 3760/731
Uncontrolled Keywords: Atomic variances; Photon transition mechanisms; Radiation fields
Subjects: Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Science > Department of Computational and Theoretical Sciences
Depositing User: Nur' Aini Abu Bakar
Date Deposited: 28 Jul 2011 09:18
Last Modified: 28 Jul 2011 09:18
URI: http://irep.iium.edu.my/id/eprint/731

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