Enhancement of nonclassical properties of two qubits via deformed operators

TL;DR

This paper investigates how deforming operators affect the nonclassical properties of two qubits interacting with a cavity field, focusing on entanglement, fidelity, and stability of quantum states.

Contribution

It introduces a study of deformed operators in two-qubit cavity interactions, analyzing their impact on entanglement and information transfer stability.

Findings

Robustness of bipartite systems diminishes at finite photon numbers.

Absence of deformation parameters enhances stability of purity and fidelity.

Deformed operators influence the asymptotic behavior of quantum properties.

Abstract

We explore the dynamics of two atoms interacting with a cavity field via deformed operators. Properties of the asymptotic regularization of entanglement measures proving, for example, purity cost, regularized fidelity and accuracy of information transfer are analyzed. We show that the robustness of a bipartite system having a finite number of quantum states vanishes at finite photon numbers, for arbitrary interactions between its constituents and with cavity field. Finally it is shown that the stability of the purity and the fidelity is improved in the absence of the deformation parameters.