Quantum Entanglement in Two-Photon Rabi Stark Model

TL;DR

This paper investigates the spectral properties, non-classicality, and quantum entanglement in the two-photon Rabi Stark model, revealing how Stark coupling influences these quantum features through numerical analysis.

Contribution

It provides a detailed numerical study of spectral collapse, non-classicality, and entanglement in the two-photon Rabi Stark model, highlighting the role of Stark coupling strength.

Findings

Spectral collapse depends on coupling strength.

Wigner function visualization shows non-classicality.

Quantum entanglement varies with Stark coupling.

Abstract

In this is work, an investigation on the two-photon Rabi Stark model as a function of the coupling strength under the effect of different Stark coupling strength values is treated. Here, we numerically explore the spectral collapse of the \textit{2pRSM} as a function of the qubit-cavity field coupling strength to gain further physical insights. Also, the visualization of Wigner function in purpose to study the non-classicality in ground-state of the system. At the last, we measure the quantum entanglement via von Neumann Entropy for different ratios of the Stark coupling strength. This work deepens the understanding of the role played by the Stark coupling strength determining the quantum entanglement.