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International Journal of Theoretical Physics

, Volume 57, Issue 8, pp 2319–2329 | Cite as

The Population Inversion and the Entropy of a Moving Two-Level Atom in Interaction with a Quantized Field

  • D. A. M. Abo-Kahla
  • M. Abdel-Aty
  • A. Farouk
Article

Abstract

An atom with only two energy eigenvalues is described by a two-dimensional state space spanned by the two energy eigenstates is called a two-level atom. We consider the interaction between a two-level atom system with a constant velocity. An analytic solution of the systems which interacts with a quantized field is provided. Furthermore, the significant effect of the temperature on the atomic inversion, the purity and the information entropy are discussed in case of the initial state either an exited state or a maximally mixed state. Additionally, the effect of the half wavelengths number of the field-mode is investigated.

Keywords

Quantum information Thermal state Entropy 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Mathematics, Faculty of ScienceTaibah UniversityMadinaSaudi Arabia
  2. 2.Department of Mathematics, Faculty of EducationAin Shams UniversityRoxyEgypt
  3. 3.Deanship of Scientific Research and Graduate StudiesApplied Science UniversitySitraBahrain
  4. 4.Sohag UniversitySohagEgypt
  5. 5.Department of Physics and Computer Science, Faculty of ScienceWilfrid Laurier UniversityWaterlooCanada

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