Remote atom entanglement in a fiber-connected three-atom system

TL;DR

This paper demonstrates how a fiber-connected three-atom system can generate significant three-atom entanglement using an Ising-type interaction, despite small two-atom entanglement, under specific parameter conditions.

Contribution

It introduces a method to achieve remote three-atom entanglement in a fiber-connected system with an effective Ising interaction under certain conditions.

Findings

Three-atom entanglement can reach near unity.

Two-atom entanglement remains very small.

Effective interaction occurs when Δ ≈ γ₀ ≫ g.

Abstract

An Ising-type atom-atom interaction is obtained in a fiber-connected three-atom system. The interaction is effective when $\Delta\approx \gamma _{0}\gg g$. The preparations of remote two-atom and three-atom entanglement governed by this interaction are discussed in specific parameters region. The overall two-atom entanglement is very small because of the existence of the third atom. However, the three-atom entanglement can reach a maximum very close to 1.