Entanglement evaluation with atomic Fisher information

A.-S.F. Obada and S. Abdel-Khalek

Physica A: Statistical Mechanics and its Applications, 2010, vol. 389, issue 4, 891-898

Abstract: In this paper, the concept of atomic Fisher information (AFI) is introduced. The marginal distributions of the AFI are defined. This quantity is used as a parameter of entanglement and compared with linear and atomic Wehrl entropies of the two-level atom. The evolution of the atomic Fisher information and atomic Wehrl entropy for only the pure state (or dissipation-free) of the Jaynes–Cummings model is analyzed. We demonstrate the connections between these measures.

Keywords: Atomic Fisher information; Atomic Wehrl entropy; Atomic Q-function; Jaynes–Cummings model (search for similar items in EconPapers)
Date: 2010
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:389:y:2010:i:4:p:891-898

DOI: 10.1016/j.physa.2009.09.015

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