光子-磁振子混合系统：探索Purcell效应
Hybrid Photon-magnon Systems: Exploring the Purcell Effect
AI总结：
本文通过YIG薄膜与六边形环谐振器构成的光子-磁振子耦合系统，利用阻尼常数调控实现从反交叉到Purcell区域的过渡，建立了Purcell效应与耦合强度之间的定量关系，为片上量子器件中光子耗散控制提供了新方法。
摘要：
我们提出了一种在光子-磁振子耦合（PMC）混合系统中观测Purcell效应的新方法，该系统由钇铁石榴石（YIG）薄膜和六边形环谐振器（HRR）以平面几何结构组成。该混合系统已使用商用电磁全波仿真器CST Microwave Studio进行设计和仿真，针对YIG薄膜的不同阻尼常数（alpha）取值，同时保持HRR特性不变。我们的结果表明，随着磁振子阻尼的增加，透射谱中光子与磁振子模式之间的反交叉行为逐渐减弱，使耦合模式过渡到Purcell区域。这一过渡归因于微波光子在与有损磁振子耦合时自发辐射速率增强，从而将PMC系统驱动到Purcell区域。为阐明这一行为，我们建立了一个基于量子模型的完整理论框架，该框架准确描述了所观测到的Purcell现象，并提供了PMC强度（g/2pi）的估计。值得注意的是，通过将alpha从1.4 x 10^-5调节到2.8 x 10^-2，我们实现了对（g/2pi）从63 MHz到127 MHz范围的精确控制。本研究突出了Purcell效应在增强光子衰减速率方面的作用，并建立了其与PMC强度之间的明确关系。我们的工作提供了一种控制光子谐振耗散的全面方法，为探索Purcell效应及其在利用磁振子-光子相互作用实现量子技术的片上功能器件中的应用开辟了新途径。
英文摘要：
We present a novel approach to observing the Purcell effect in a photon-magnon coupled (PMC) hybrid system consisting of a yttrium iron garnet (YIG) thin film and a hexagonal ring resonator (HRR) arranged in a planar geometry. This hybrid system has been designed and simulated using the commercial electromagnetic full-wave simulator CST Microwave Studio for various values of damping constant (alpha) of the YIG film while keeping the HRR properties constant. Our results reveal that as the magnon damping increases, the anti-crossing behavior between photon and magnon modes in the transmission spectra diminishes, transitioning the coupled modes into the Purcell regime. This transition is attributed to an enhanced spontaneous emission rate of microwave photons when coupled to lossy magnons, driving the PMC system into the Purcell regime. To elucidate this behavior, we developed a comprehensive theoretical framework based on a quantum model, which accurately describes the observed Purcell phenomena and provides estimations of the PMC strength (g/2pi). Notably, by tuning alpha from 1.4 x 10^-5 to 2.8 x 10^-2, we achieved precise control over (g/2pi) ranging from 63 MHz to 127 MHz. This study highlights the Purcell effect's role in enhancing photon decay rates and establishes a clear relationship with PMC strength. Our work offers a comprehensive method for controlling photon resonance dissipation, opening new avenues for exploring the Purcell effect and its applications in on-chip functional devices leveraging magnon-photon interactions for quantum technologies.
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