Generation of four-partite GHZ and W states by using a high-finesse bimodal cavity

TL;DR

This paper introduces two deterministic schemes using bimodal cavity QED to generate four-partite GHZ and W entangled states with potential extensions to N-partite systems, and proposes methods to verify their non-classical correlations.

Contribution

The paper presents novel deterministic schemes for generating four-partite GHZ and W states using bimodal cavities in cavity QED, extending to N-partite states and methods for revealing non-classical correlations.

Findings

Schemes successfully generate four-partite GHZ and W states.

Extension methods for N-partite entangled states.

Proposed techniques to reveal non-classical correlations.

Abstract

We propose two novel schemes to engineer four-partite entangled Greenberger-Horne-Zeilinger (GHZ) and W states in a deterministic way by using chains of (two-level) Rydberg atoms within the framework of cavity QED. These schemes are based on the resonant interaction of the atoms with a bimodal cavity that simultaneously supports, in contrast to a single-mode cavity, two independent modes of the photon field. In addition, we suggest the schemes to reveal the non-classical correlations for the engineered GHZ and W states. It is shown how these schemes can be extended in order to produce general N-partite entangled GHZ and W states.