NbTiN超导谐振器中的灾难性磁通量雪崩
Catastrophic magnetic flux avalanches in NbTiN superconducting resonators
AI总结：
本研究结合磁光成像与高频测量，探究NbTiN超导谐振器中磁场穿透模式及磁通量雪崩对谐振频率的影响，证实超导谐振器可用于磁通量动力学研究，对铌基超导射频器件发展具有重要意义。
摘要：
宏观超导组件是各类量子电路的重要构建模块。由于若干预期应用需要暴露于磁场中，探究磁场对其性能的影响至关重要。本文结合磁光成像与高频测量，探究了磁场穿透的复杂模式，并明确了其对NbTiN超导谐振器谐振频率的影响。在约低于超导临界温度一半的温度下，磁通量雪崩的发展表现为场依赖谐振频率中的噪声响应。磁光成像揭示了不同的机制区域，并区分了接地面与谐振器中雪崩的影响。我们的研究结果表明，超导谐振器是研究磁通量动力学的宝贵工具。此外，当前铌基超导射频器件蓬勃发展，本报告揭示了磁通量动力学的严重影响，具有时效性。
英文摘要：
Macroscopic superconducting components are an important building block of various quantum circuits. Since several of the envisioned applications require exposure to magnetic fields, it is of utmost importance to explore the impact of magnetic fields on their performance. Here we explore the complex pattern of magnetic field penetration and identify its impact on the resonance frequency of NbTiN superconducting resonators by combining magneto-optical imaging and high-frequency measurements. At temperatures below approximately half of the superconducting critical temperature, the development of magnetic flux avalanches manifests itself as a noisy response in the field-dependent resonance frequency. Magneto-optical imaging reveals different regimes and distinguishes the impact of avalanches in the ground plane and resonator. Our findings demonstrate that superconducting resonators represent a valuable tool to investigate magnetic flux dynamics. Moreover, the current blooming of niobium-based superconducting radio-frequency devices makes this report timely by unveiling the severe implications of magnetic flux dynamics.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
