Investigations of information quantifiers for the Tavis–Cummings model

A.-S.F. Obada, S. Abdel-Khalek, K. Berrada and M.E. Shaheen

Physica A: Statistical Mechanics and its Applications, 2013, vol. 392, issue 24, 6624-6632

Abstract: In this article, a system of two two-level atoms interacting with a single-mode quantized electromagnetic field in a lossless resonant cavity via a multi-photon transition is considered. The quantum Fisher information, negativity, classical Fisher information, and reduced von Neumann entropy for the two atoms are investigated. We found that the number of photon transitions plays an important role in the dynamics of different information quantifiers in the cases of two symmetric and two asymmetric atoms. Our results show that there is a close relationship between the different quantifiers. Also, the quantum and classical Fisher information can be useful for studying the properties of quantum states which are important in quantum optics and information.

Keywords: Quantum Fisher information; Classical Fisher information; von Neumann entropy (search for similar items in EconPapers)
Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:392:y:2013:i:24:p:6624-6632

DOI: 10.1016/j.physa.2013.07.051

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