发表机构
Indian Association for the Cultivation of Science; Indian Institute of Technology, Kanpur; TCG Centres of Research and Education in Science and Technology（印度科学培养印度协会; 坎普尔印度理工学院; TCG科学技术研究与教育中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究探讨原子-腔耦合系统中极限环与量子同步的相互作用，通过广义Husimi-Q函数和对称性分析揭示同步与Wehrl互信息互斥，为量子计量提供新途径。
AI 中文摘要
我们考虑一个腔量子电动力学（CQED）装置，其中由经典场驱动的自旋-1原子系综与两个受驱动的腔场模式相互作用。我们表明，这两个子系统——原子和双模腔场——根据腔驱动强度和其他系统参数，表现出极限环或量子同步。为了可视化场中的极限环和同步，我们使用SU(2)相干态引入了广义双模场Husimi-Q函数。对于原子自旋态，我们利用自旋-1 Husimi-Q函数来可视化相同内容。我们通过分析$U(1)$对称性破缺、Wigner准概率分布、约化场密度矩阵的相干性，进一步证实了场同步和极限环的发生。我们的结果揭示了极限环与量子同步行为之间有趣的相互作用，突出了驱动耗散相互作用量子系统中涌现的量子现象。此外，我们计算了两模之间的Wehrl互信息，发现场同步与Wehrl互信息是相互排斥的。我们的研究对于利用耦合原子-腔系统提取量子计量学中的量子优势具有重要意义。
英文摘要
We consider a cavity quantum electrodynamics (CQED) setup where an ensemble of spin-1 atoms driven by a classical field interacts with two driven cavity field modes. We show that the two sub-systems - the atoms and the two-mode cavity field, exhibit limit-cycle or quantum synchronization depending on the cavity drive strengths and other system parameters. In order to visualize the limit cycle and synchronization in the field, we introduce generalized two-mode field Husimi-Q function using SU(2) coherent states. For atomic spin states, we make use of spin-1 Husimi-Q function to visualize the same. We further corroborate the occurrence of field synchronization and limit cycle by analyzing $U(1)$ symmetry breaking, Wigner quasi-probability distribution, coherence properties of reduced field density matrix. Our results reveal intriguing interplay between the limit-cycle and quantum synchronization behavior, highlighting emergent quantum phenomena in driven dissipative interacting quantum systems. Additionally, we calculate Wehrl mutual information between the two modes and find that the field synchronization and Wehrl mutual information are mutually exclusive. Our study would be important to extract quantum advantages in quantum metrology using coupled atom-cavity systems.
Comments41 pages 9 figures
