Coherent quantum feedback-enhanced synchronization in a cavity-magnon system

Rong-Can Yang, Yue-Han Lin, Ya-Qin Lin, Zhi-Ying Lin, Fang Li and Hong-Yu Liu

Chaos, Solitons & Fractals, 2025, vol. 199, issue P1

Abstract: Synchronization serves as a critical criterion for establishing strong correlations within coupled multi-mode systems. Here, we propose a scheme to enhance classical and quantum synchronization for two microwave cavities in a cavity-magnon system using coherent quantum feedback (CQFB). Our results demonstrate that both types of synchronization can be simultaneously enhanced within the same parameter regimes. The application of the CQFB loop to one of the microwave cavities leads to an inconsistency in the dissipation rates between the two cavities, and then effectively mitigate the impact of thermal noise on the system, thereby enhancing the robustness of synchronization against variations of bath temperatures. This study reveals novel dimensions of synchronization enabled by CQFB in microwave systems.

Keywords: Quantum information processing; Coherent quantum feedback; Cavity-magnon system; Synchronization (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:199:y:2025:i:p1:s096007792500699x

DOI: 10.1016/j.chaos.2025.116686

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