Strong Coupling between Microwave Photons and Nanomagnet Magnons
Strong Coupling between Microwave Photons and Nanomagnet Magnons
复制标题
DOI：
10.1103/physrevlett.123.107702
复制
发表时间：
2019-09-03
影响因子：
8.6
通讯作者：
Liu, Luqiao
中科院分区：
文献类型：
--
作者：
Hou, Justin T.;Liu, Luqiao
耦合微波光子-磁振子混合系统通过利用各种磁振子物理提供了有前途的应用。目前，为了实现两个子系统之间的高耦合强度，使用具有大自旋数的笨重铁磁体，这限制了它们在可扩展量子信息处理中的潜在应用。通过提高单自旋耦合强度光刻定义的超导谐振器，我们报告纳米厚坡莫合金线的谐振器模式和Kittel模式之间的高合作。芯片上的，光刻可扩展的，超导量子电路兼容的设计提供了一个直接的路线，实现混合量子系统与纳米磁体，其耦合强度可以精确地设计和动态特性可以控制的各种机制来自自旋电子学研究。
Coupled microwave photon-magnon hybrid systems offer promising applications by harnessing various magnon physics. At present, in order to realize high coupling strength between the two subsystems, bulky ferromagnets with large spin numbers are utilized, which limits their potential applications for scalable quantum information processing. By enhancing single spin coupling strength using lithographically defined superconducting resonators, we report high cooperativities between a resonator mode and a Kittel mode in nanometer thick Permalloy wires. The on-chip, lithographically scalable, and superconducting quantum circuit compatible design provides a direct route towards realizing hybrid quantum systems with nanomagnets, whose coupling strength can be precisely engineered and dynamic properties can be controlled by various mechanisms derived from spintronic studies.