Cavity Spintronics: Expanding the horizons for microwave, THz, magnetic, and quantum technologies

腔自旋电子学：拓展微波、太赫兹、磁和量子技术的视野

• 批准号: RGPIN-2019-05871
• 负责人: Hu, CanMing
• 金额: $ 5.46万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=738556
• 关键词: Cavity; Spintronics; Expanding; horizons; microwave

Cavity Spintronics is a newly developing interdisciplinary field that started around 2014. It utilizes cavity techniques, which have transformed many other disciplines, to investigate the strong light--matter interaction between magnetic materials and electromagnetic waves. Via the quantum physics of spin--photon entanglement on the one hand, and via classical electrodynamic coupling on the other, the emergence of this field connects some of the most exciting modern physics, such as quantum information and quantum optics, with one of the oldest sciences on the earth, magnetism. Now is the right time to harness the new physics of cavity spintronics to expand the horizons for microwave, THz, magnetic, and quantum technologies. Also key to the timing of this proposal is our own research momentum built up in the past 4 years, during which my students and I have made original and unique contributions to reveal and utilize the physics of the cavity magnon polariton (CMP), a versatile quasi-particle that has both spin and photon characteristics.     Building on these opportunities, the goals of my research program are to use cavity spintronics approaches to address the fundamental questions of light--matter interaction in spin-photon coupled systems, and to create novel devices for innovating microwave, THz, magnetic, and quantum technologies. Our unique advantage stems from our world--leading ability to electrically detect CMP with high sensitivity, the ability to directly probe both the amplitude and phase of CMP, the proficiency of fabricating on--chip high--quality cavity circuits, and the capacity of the research infrastructure in my lab which was renovated in the past 5 years with a vast set of tools for performing cavity spintronics experiments at extreme conditions (such as in high magnetic fields, at ultra-low temperatures, and with ac modulations up to high frequencies). We will use these techniques to study ferromagnetic metals, ferromagnetic insulators, antiferromagnets, as well as hybrid devices with tailored functions made of the combination of these materials and high--quality cavities. Examples of key topics that we will work on include inventing the CMP--based solid-state maser, developing non-reciprocal control of microwave transmission, exploring THz cavity spintronics, and facilitating industrial applications of cavity--enhanced sensing. Existing industrial collaborations with researchers at BlackBerryr, Everspin, and OPI Systems will allow rapid translation of advances in my lab into either proof- of- concept or prototype devices for commercial use, and will therefore have a significant impact in the quickly advancing field of cavity spintronics. Funding for this program will be primarily used for supporting 4 graduate and 2 undergraduate students (every year), training them to gain unique skills highly desirable in the knowledge-intensive information and communication technology (ICT) sector of the Canadian economy.

腔自旋电子学是一个新兴的跨学科领域，始于 2014 年左右。它利用腔技术，通过自旋光子的量子物理研究磁性材料与电磁波之间的强光-物质相互作用，该技术已经改变了许多其他学科。一方面通过纠缠，另一方面通过经典的电动力耦合，该领域的出现将一些最令人兴奋的现代物理学（例如量子信息和量子光学）与最古老的科学之一联系起来。现在正是利用空腔自旋电子学的新物理学来拓展微波、太赫兹、磁和量子技术视野的最佳时机。这一提议的时机的关键是我们自己在该领域建立的研究动力。在过去的四年里，我和我的学生在揭示和利用腔磁振子极化子（CMP）的物理学方面做出了原创性和独特的贡献，CMP是一种具有自旋和光子特性的多功能准粒子。目标我的研究计划的主要目的是使用腔自旋电子学方法来解决自旋光子耦合系统中光与物质相互作用的基本问题，并创建用于创新微波、太赫兹、磁和量子技术的新型器件。我们世界领先的高灵敏度电检测 CMP 的能力、直接探测 CMP 幅度和相位的能力、制造片上高质量腔电路的熟练程度以及我的研究基础设施的能力我们将使用该实验室，该实验室在过去 5 年中进行了翻新，配备了大量用于在极端条件下（例如高磁场、超低温以及高达高频的交流调制）进行腔自旋电子学实验的工具。这些技术用于研究铁磁金属、铁磁绝缘体、反铁磁体，以及由这些材料和高质量空腔组合而成的具有定制功能的混合器件。将致力于发明基于 CMP 的固态微波激射器、开发微波传输的非互易控制、探索太赫兹腔自旋电子学以及促进与 BlackBerryr、Everspin 和 Everspin 的研究人员现有的工业合作。 OPI Systems 将使我实验室的进步能够快速转化为概念验证或商业用途的原型设备，因此将对快速发展的腔自旋电子学领域产生重大影响。该计划的资金将主要用于支持 4 名研究生和 2 名本科生（每年），培训他们获得加拿大经济知识密集型信息和通信技术 (ICT) 领域非常需要的独特技能。