The dynamics of entanglement in two-atom Tavis-Cummings model with non-degenerate two-photon transitions for tripartite entangled W-like states

TL;DR

This paper investigates how dipole-dipole interactions affect entanglement dynamics in a two-atom Tavis-Cummings model with non-degenerate two-photon transitions, showing potential for entanglement enhancement and mitigation of sudden death.

Contribution

It introduces analysis of dipole-dipole effects on entanglement in a specific two-photon transition model with tripartite W-like states, highlighting entanglement control mechanisms.

Findings

Dipole-dipole interaction increases entanglement between atoms.

Entanglement sudden death can be weakened by dipole-dipole interaction.

Entanglement dynamics depend on initial states and interactions.

Abstract

The influence of dipole-dipole interaction on the entanglement between two atoms with different initial entangled W-like states in Tavis-Cummings model with degenerate two-photon transitions has been investigated. The results show that the entanglement between two atoms can be increased by means of dipole-dipole interaction and for some initial states the entanglement sudden death effect can be weakened.