Quantum entanglement in two-photon Rabi Stark model

IF 2 3区物理与天体物理 Q3 OPTICS

Applied Physics B Pub Date : 2025-05-08 DOI:10.1007/s00340-025-08470-7

Zakaria Boutakka, Zoubida Sakhi, Mohamed Bennai

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Abstract

In this study, we delve into the critical quantum phenomena of the two-photon Rabi-Stark model (2pRSM), thereby establishing a foundational basis for the development of more effective and scalable quantum sensing technologies. Our analysis explores how variations in coupling strengths and Stark coupling parameters influence the quantum dynamics within the system. Through a detailed numerical investigation, we uncover the phenomenon of spectral collapse in the 2pRSM, analyzing its dependence on the qubit-cavity field coupling strength to provide further physical insights. We further employ the Wigner function as a tool to visualize and quantify the system’s non-classical characteristics, highlighting the ground state’s negativity as an indicator of its quantum characteristics. Additionally, the dynamics of entanglement are rigorously investigated across a range of Stark coupling strengths using von Neumann entropy, thereby emphasizing the pivotal role of Stark interactions in modulating quantum entanglement. By clarifying these fundamental quantum features, our work bridges theoretical insights with practical implications, establishing a solid foundation for advancements in quantum information science and enabling transformative applications in quantum sensing and related fields.

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双光子Rabi Stark模型中的量子纠缠

在本研究中，我们深入研究了双光子Rabi-Stark模型（2pRSM）的关键量子现象，从而为开发更有效和可扩展的量子传感技术奠定了基础。我们的分析探讨了耦合强度和斯塔克耦合参数的变化如何影响系统内的量子动力学。通过详细的数值研究，我们揭示了2pRSM中的光谱坍缩现象，并分析了其对量子比特-腔场耦合强度的依赖，以提供进一步的物理见解。我们进一步采用Wigner函数作为工具来可视化和量化系统的非经典特征，突出基态的负性作为其量子特征的指标。此外，利用冯·诺伊曼熵严格研究了斯塔克耦合强度范围内的纠缠动力学，从而强调了斯塔克相互作用在调制量子纠缠中的关键作用。通过澄清这些基本的量子特征，我们的工作将理论见解与实际意义联系起来，为量子信息科学的进步奠定坚实的基础，并使量子传感和相关领域的变革性应用成为可能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics B 物理-光学

CiteScore

4.00

自引率

4.80%

发文量

202

审稿时长

3.0 months

期刊介绍： Features publication of experimental and theoretical investigations in applied physics Offers invited reviews in addition to regular papers Coverage includes laser physics, linear and nonlinear optics, ultrafast phenomena, photonic devices, optical and laser materials, quantum optics, laser spectroscopy of atoms, molecules and clusters, and more 94% of authors who answered a survey reported that they would definitely publish or probably publish in the journal again Publishing essential research results in two of the most important areas of applied physics, both Applied Physics sections figure among the top most cited journals in this field. In addition to regular papers Applied Physics B: Lasers and Optics features invited reviews. Fields of topical interest are covered by feature issues. The journal also includes a rapid communication section for the speedy publication of important and particularly interesting results.