Collaborative Research: Optimizing KTaO3 Superconductivity for Quantum Applications

合作研究：优化 KTaO3 超导性以实现量子应用

• 批准号: 2327535
• 负责人: Gleb Finkelstein
• 金额: $ 36万
• 依托单位: Duke University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-08-01 至 2026-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2327535&HistoricalAwards=false
• 关键词: Collaborative; Research; Optimizing; KTaO3; Superconductivity

Non-TechnicalThe project focuses on the development and understanding of a new class of “two-dimensional superconductors” – ultra thin materials, in which electric current can flow without resistance. The research addresses technical challenges through basic materials studies and the development of thin film deposition techniques. The high-quality films grown in this project impact the theoretical understanding of two-dimensional superconductors. The fabricated devices allow the researchers to assess the suitability of the proposed materials as a platform for quantum information processing. These research activities contribute to training of undergraduate and graduate students in advanced quantum and nanotechnological research. The project also includes outreach in the local community, with a special focus on broadening the participation of underrepresented groups in STEM.TechnicalThis project aims to explore the nature of the recently discovered two-dimensional anisotropic superconductor KTaO3. The researchers grow high quality heterostructures of KTaO3 and characterizes them with local and global techniques. They plan to make Josephson junctions and kinetic inductors along various crystallographic directions to investigate the nature of anisotropic superconductivity in this system. They also plan to explore the possibility of controlling these structures using external electric-field gating. These studies serve as an initial suitability assessment of KTaO3 as an intrinsic and low-noise platform for quantum information processing. The project also provides training opportunities for graduate, undergraduate and high school students in electronic device fabrication and measurements (Finkelstein lab) and thin film deposition and materials characterization (Ahadi lab).This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术性该项目的重点是开发和理解一类新型“二维超导体”——超薄材料，其中电流可以无电阻流动。该研究通过基础材料研究和薄膜开发解决了技术挑战。该项目中生长的高质量薄膜影响了对二维超导体的理论理解，使研究人员能够评估所提出的材料作为量子信息处理平台的适用性。这些研究活动有助于本科生和学生的培训。研究生在该项目还包括在当地社区的推广，特别注重扩大 STEM 中代表性不足的群体的参与。技术该项目旨在探索最近发现的二维各向异性超导体 KTaO3 的性质。生长高质量的 KTaO3 异质结构，并利用局部和全局技术对其进行表征，他们计划沿着不同的晶体学方向制造约瑟夫森结和动力学感应器，以研究各向异性的本质。他们还计划探索使用外部电场门控制这些结构的可能性，这些研究作为 KTaO3 作为量子信息处理的内在和低噪声平台的初步适用性评估。为研究生、本科生和高中生提供电子器件制造和测量（Finkelstein 实验室）以及薄膜沉积和材料表征（Ahadi 实验室）方面的培训机会。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准。