EAGER: BRAIDING: Braiding Majorana bound states in atomic chains on a superconducting island

渴望：编织：在超导岛上的原子链中编织马约拉纳束缚态

• 批准号: 1744011
• 负责人: Stevan Nadj-Perge
• 金额: $ 30万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-01 至 2019-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1744011&HistoricalAwards=false
• 关键词: EAGER; BRAIDING; Braiding; Majorana; bound

Non-technical Abstract:Majorana bound states are localized at the edge of a one-dimensional topological superconductor. These excitations are viewed as a starting point for topological quantum information processing. This award supports experimental research activity aiming to address the key challenges related to establishing control of Majorana bound states. This particular implementation avoids technical challenges related to physically moving Majorana bound states and, due to the small size of the superconducting island, has intrinsic protection against errors. If successful, this research activity has a potential to make transformative breakthrough in the field of quantum science and technology. The research aspect of this project is accompanied by a multifaceted educational program for graduate and undergraduate students as well as outreach program targeting high-school students and science teachers from the Pasadena School District. The research advances of the project will be broadly disseminated through research articles, seminars, courses and public lectures. Technical Abstract:This award supports experimental efforts aiming towards a demonstration of a topological quantum bit based on Majorana bound states realized in magnetic atomic chains placed on a superconducting island which is integrated into a mesoscopic interferometer circuit. In this scheme, reading out the quantum information encoded in Majorana states and performing quantum logical operations can be done by measuring electron parity using interferometry. This particular implementation combines the advantages of theoretical proposals which avoid technical challenges related to physically moving Majorana bound states with intrinsic protection against the quasi-particle poisoning which is considered to be major limiting factor for the coherence times of topological quantum systems. In order to realize this experimental platform several approaches for integration of atomic assemblies accessible using scanning probe microscopy into a nano-fabricated mesoscopic interferometer device will be explored. If successful, this highly focused research activity has a potential to make transformative breakthrough in the fields of quantum science and technology. The research aspect of this project is accompanied by a multifaceted educational program for graduate and undergraduate students as well as outreach program targeting high-school students and science teachers from the Pasadena School District. The research advances of the project will be broadly disseminated through research articles, seminars, courses and public lectures.

非技术摘要：马约拉纳束缚态位于一维拓扑超导体的边缘。这些激发被视为拓扑量子信息处理的起点。该奖项支持旨在解决与建立马约拉纳束缚态控制相关的关键挑战的实验研究活动。这种特殊的实现方式避免了与物理移动马约拉纳束缚态相关的技术挑战，并且由于超导岛的小尺寸，具有固有的防错误保护。如果成功，这项研究活动有可能在量子科学和技术领域取得变革性突破。该项目的研究方面伴随着研究生和本科生的多方面教育计划，以及针对帕萨迪纳学区高中学生和科学教师的外展计划。该项目的研究进展将通过研究文章、研讨会、课程和公开讲座广泛传播。技术摘要：该奖项支持旨在展示基于Majorana束缚态的拓扑量子比特的实验努力，该束缚态在放置在超导岛上的磁性原子链中实现，该超导岛集成到介观干涉仪电路中。在这个方案中，阅读编码在马约拉纳态的量子信息和执行量子逻辑操作可以通过使用干涉测量电子宇称来完成。这种特殊的实现结合了理论建议的优点，避免了与物理移动马约拉纳束缚态相关的技术挑战，具有针对准粒子中毒的内在保护，准粒子中毒被认为是拓扑量子系统相干时间的主要限制因素。为了实现这一实验平台，将探索几种方法集成的原子组件进入纳米制造的介观干涉仪设备使用扫描探针显微镜。如果成功，这项高度集中的研究活动有可能在量子科学和技术领域取得变革性突破。该项目的研究方面伴随着研究生和本科生的多方面教育计划，以及针对帕萨迪纳学区高中学生和科学教师的外展计划。该项目的研究进展将通过研究文章、研讨会、课程和公开讲座广泛传播。

项目成果

Electronic correlations in twisted bilayer graphene near the magic angle

• DOI: 10.1038/s41567-019-0606-5
• 发表时间: 2019-11-01
• 期刊: NATURE PHYSICS
• 影响因子: 19.6
• 作者: Choi, Youngjoon;Kemmer, Jeannette;Nadj-Perge, Stevan
• 通讯作者: Nadj-Perge, Stevan