Composite superconductor materials for high quality resonators

用于高质量谐振器的复合超导材料

• 批准号: 485458-2015
• 负责人: Miao, Guoxing
• 金额: $ 1.82万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=584972
• 关键词: Composite; superconductor; materials; quality; resonators

High-quality superconductors are critical to the superconducting quantum computing technologies. Because of their extremely low loss, they are widely used as the core components to store and transfer quantum information coherently. While many superconductors have been attempted, the existing knowledge is quit limited to exploring single materials up to now. We propose to use composite heteroepitaxial materials to construct superconductor resonators with higher-quality factors. The material system has a sandwich structure: the center layer having higher critical field and critical temperature, but they tend to have poor performance for microwave transmission; the top and bottom surface layers are formed with materials with demonstrated high-Q microwave performance, but they tend to have poor field performances. Combined together, microwave signals flow on the surfaces due to skin effect, and the surface layers are enhanced due to proximity effect. The composite system thus can outperform each of the individual components alone. The developed technology will further strengthen Canada's leading role in the quantum computing industries.

高质量的超导体是超导量子计算技术的关键。因为 由于其极低的损耗，它们被广泛用作量子存储和传输的核心器件。 信息连贯。虽然许多超导体已经尝试，现有的知识是退出 到目前为止，仅限于探索单一材料。我们建议使用复合异质外延材料， 构造具有更高品质因数的超导体谐振器。材料系统具有夹层结构： 中心层具有较高的临界场和临界温度，但它们往往具有较差的性能， 微波传输;顶部和底部表面层是由材料形成的， 高Q微波性能，但它们往往具有较差的场性能。结合在一起，微波 由于趋肤效应，信号在表面上流动，并且由于邻近效应，表面层被增强。的 因此，复合系统可以胜过单独的每个单独的组件。研究开发成果 这将进一步加强加拿大在量子计算行业的主导作用。