Unraveling the Atomic Features of Topological Qubits

揭示拓扑量子位的原子特征

• 批准号: 576697-2022
• 负责人: Moutanabbir, OussamaO
• 金额: $ 1.82万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=754573
• 关键词: Unraveling; Atomic; Features; Topological; Qubits

This collaborative project aims at elucidating the atomic structure of the emerging topological qubits and optimizing their properties. These systematic studies will combine atom probe tomography (APT) and interface engineering in hybrid semiconductor-superconductor large spin-orbit PbSnTe nanowires grown at variable content. APT is the only method capable of dissecting on a 3-D atom-by-atom basis single nanostructures and devices at near-atomic resolution. The ability to access these insights is critical to improving the theoretical models, predicting the performance of individual qubits, and evaluating any fluctuation in their behavior that may impact the scaling to large qubit arrays. Establishing a feedback loop between the growth of PbSnTe-based new material systems, their quantum transport characteristics, and their atomic-scale 3-D compositional maps are crucial to accelerating the optimization of their epitaxial growth to eventually achieve high-quality interfaces. This knowledge will enable the modeling of topological qubits with realistic representations of the fabricated interfaces. Addressing these challenges will create new frontiers in quantum materials research and facilitate key functionalities such as efficient quantum control and long coherence.

该合作项目旨在阐明新兴拓扑量子比特的原子结构并优化其特性。这些系统的研究将结合联合收割机原子探针层析成像（APT）和界面工程在混合超导体大自旋轨道PbSnTe纳米线生长在可变的内容。APT是唯一能够在近原子分辨率下以3D原子为基础解剖单个纳米结构和器件的方法。访问这些见解的能力对于改进理论模型，预测单个量子位的性能以及评估可能影响大型量子位阵列扩展的任何行为波动至关重要。在PbSnTe基新材料系统的生长、它们的量子输运特性和它们的原子尺度3D组成图之间建立反馈回路，对于加速优化它们的外延生长以最终实现高质量界面至关重要。这些知识将使拓扑量子位的建模与制造接口的现实表示。解决这些挑战将在量子材料研究中开辟新的前沿，并促进有效的量子控制和长相干性等关键功能。