Strong magnon-photon coupling with chip-integrated YIG in the zero-temperature limit
Strong magnon-photon coupling with chip-integrated YIG in the zero-temperature limit
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DOI：
10.1063/5.0054837
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发表时间：
2021-07-19
影响因子：
4
通讯作者：
Weides, Martin
中科院分区：
文献类型：
--
作者：
Baity, Paul G.;Bozhko, Dmytro A.;Weides, Martin
自旋波和超导技术的交叉集成是一种很有前途的方法，可以为未来的信息处理技术创建新型混合设备，以在经典和量子状态下存储、操作或转换数据。使用块状钇铁石榴石（Y3Fe5O12，YIG）和三维微波光子腔已经广泛研究了混合磁振子极化系统。然而，迄今为止，YIG 生长的局限性阻碍了其融入 CMOS 兼容技术，例如高品质因数超导量子技术。为了克服这一障碍，我们使用等离子体聚焦离子束 (PFIB) 技术（利用微米级的精确放置）将 YIG 与超导微波器件集成。使用平面微波电路在毫开尔文温度下对 PFIB 处理的 YIG 样品进行了铁磁共振测量。此外，我们通过保持相当低的损耗，同时将系统缩小到微米尺度，证明了超导谐振器和 YIG 铁磁共振模式之间的强耦合。这种片上强耦合的实现是利用自旋波和超导组件制造功能混合量子器件的关键一步。
The cross-integration of spin-wave and superconducting technologies is a promising method for creating novel hybrid devices for future information processing technologies to store, manipulate, or convert data in both classical and quantum regimes. Hybrid magnon-polariton systems have been widely studied using bulk Yttrium Iron Garnet (Y3Fe5O12, YIG) and three-dimensional microwave photon cavities. However, limitations in YIG growth have, thus far, prevented its incorporation into CMOS compatible technologies, such as high-quality factor superconducting quantum technology. To overcome this impediment, we have used Plasma Focused Ion Beam (PFIB) technology-taking advantage of precision placement down to the micrometer scale-to integrate YIG with superconducting microwave devices. Ferromagnetic resonance has been measured at milliKelvin temperatures on PFIB-processed YIG samples using planar microwave circuits. Furthermore, we demonstrate strong coupling between superconducting resonators and YIG ferromagnetic resonance modes by maintaining reasonably low loss while reducing the system down to the micrometer scale. This achievement of strong coupling on-chip is a crucial step toward fabrication of functional hybrid quantum devices from spin-wave and superconducting components.