Harnessing Nitrogen Vacancy Centers for Hybrid Quantum Information Systems

利用氮空位中心实现混合量子信息系统

• 批准号: 2029558
• 负责人: Chunhui Du
• 金额: $ 34.5万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-10-01 至 2024-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2029558&HistoricalAwards=false
• 关键词: Harnessing; Nitrogen; Vacancy; Centers; Hybrid

Currently much progress has been witnessed in the quantum-information technologies. The emerging quantum information applications serve as a transformative operation platform enabling an unprecedented data storage volume, processing speed, parallelization, as well as robust strategies against random and malignant perturbations. Many of those advantages derive from their quantum-mechanical nature endowed by excellent quantum coherence, controllable entanglement, and high fidelity of operations, which enable opportunities for outperforming their classical counterparts. Known as single-spin quantum bits, nitrogen vacancy centers, optically-active atomic defects in diamond, are known for their intrinsically long coherence time, single-spin addressability, and notable versatility in a broad temperature range, offering remarkable opportunities in designing multifunctional quantum-information systems. This proposal aims to integrate nitrogen vacancy centers with functional spintronic devices to develop hybrid quantum architectures, providing opportunities to develop nitrogen-vacancy-based quantum computers. The proposed research project will promote the participation of a diverse group of graduate and undergraduate students from physics and engineering departments and outreach activities will include lectures and demos to nearby high schools and community colleges. The proposed research and education activities will increase the society’s awareness in material science and quantum information technologies.The goal of this study is to address the major challenges facing quantum-computing with nitrogen vacancy centers by electrically manipulating the quantum spin states of nitrogen vacancy centers via the localized microwave magnetic fields generated by spin-torque nano-oscillators. By introducing the single-magnon mode sustained by a one-dimensional magnetic coupler, macroscale entanglement between distant nitrogen vacancy spin qubits can be established. The mutual interaction between spin-torque nano-oscillators and nitrogen vacancy centers can be controlled in a scalable fashion down to a sub-micrometer regime, which significantly improves the scalability of nitrogen vacancy centers in developing quantum electronic devices. By developing nitrogen-vacancy-magnon-based hybrid quantum systems and demonstrating their operation in an ambient environment, it is proposed a compatible, solid-state-based quantum-operation platform, which can be conveniently extended to the on-chip devices. It is expected new opportunities will emerge for designing high-density, scalable quantum memory and significantly promote the role of nitrogen vacancy centers in developing next-generation quantum technologies. The study will also elucidate the intriguing science of spin-torque nano-oscillators. Nitrogen vacancy centers will provide information to access the underlying spin transport and dynamic behaviors in nano-spintronic systems and provide guidelines to design advanced magnetic materials to improve the performance of spintronic electronics for future transformative information technologies.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.

目前，量子信息技术取得了很大进展。新兴的量子信息应用程序作为一个变革性的操作平台，实现了前所未有的数据存储量、处理速度、并行化以及针对随机和恶性扰动的强大策略。这些优势中的许多来自于它们的量子力学性质，它们被赋予了极好的量子相干性、可控的纠缠和高保真的操作，这使得它们有机会超越经典同行。氮空位中心被称为单自旋量子位，是钻石中光学活性的原子缺陷，以其固有的长相干时间、单自旋可寻址和在宽温度范围内的显著多功能性而闻名，为设计多功能量子信息系统提供了极好的机会。这一提议旨在将氮空位中心与功能自旋电子器件相结合，以开发混合量子体系结构，为开发基于氮空位的量子计算机提供机会。拟议的研究项目将促进来自物理和工程系的不同研究生和本科生的参与，外展活动将包括到附近的高中和社区大学进行讲座和演示。这项研究和教育活动将提高社会对材料科学和量子信息技术的认识。本研究的目标是通过自旋扭矩纳米振子产生的局域微波磁场来电控氮空位中心的量子自旋态，以解决利用氮空位中心进行量子计算所面临的主要挑战。通过引入一维磁耦合器支持的单磁振子模，可以建立远距离氮空位自旋量子比特之间的宏观纠缠。自旋扭矩纳米振子与氮空位中心之间的相互作用可以被控制到亚微米级，这显著提高了氮空位中心在发展量子电子器件中的可扩展性。通过开发基于氮-空位-磁振子的混合量子系统并演示其在环境中的运行，提出了一种兼容的、基于固态的量子操作平台，该平台可以方便地扩展到片上器件。预计在设计高密度、可扩展的量子存储器方面将出现新的机会，并显著促进氮空位中心在开发下一代量子技术中的作用。这项研究还将阐明自旋扭矩纳米振荡器的有趣科学。氮空位中心将提供信息，以了解纳米自旋电子系统中潜在的自旋输运和动力学行为，并为设计先进的磁性材料以改善未来变革性信息技术的自旋电子性能提供指导。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Quantum Sensing of Spin Fluctuations of Magnetic Insulator Films with Perpendicular Anisotropy

• DOI: 10.1103/physrevapplied.15.034031
• 发表时间: 2020-09
• 期刊: arXiv: Mesoscale and Nanoscale Physics
• 作者: Eric Lee-Wong;Jinjun Ding;Xiaoche Wang;Chuanpu Liu;N. McLaughlin;Hailong Wang;Mingzhong Wu;C. Du

Quantum sensing and imaging of spin‐orbit‐torque‐driven spin dynamics in noncollinear antiferromagnet Mn 3 Sn

非共线反铁磁体 Mn 3 Sn 中自旋轨道扭矩驱动的自旋动力学的量子传感和成像

• DOI: 10.1002/adma.202200327
• 发表时间: 2022
• 期刊: Advanced Materials
• 影响因子: 29.4
• 作者: Yan, Gerald Q.;Li, Senlei;Lu, Hanyi;Huang, Mengqi;Xiao, Yuxuan;Wernert, Luke;Brock, Jeffrey A.;Fullerton, Eric E.;Chen, Hua;Wang, Hailong
• 通讯作者: Wang, Hailong

Strong Correlation Between Superconductivity and Ferromagnetism in an Fe-Chalcogenide Superconductor

• DOI: 10.1021/acs.nanolett.1c02424
• 发表时间: 2021-08-20
• 期刊: NANO LETTERS
• 影响因子: 10.8
• 作者: McLaughlin, Nathan J.;Wang, Hailong;Du, Chunhui Rita
• 通讯作者: Du, Chunhui Rita

Electric-Field-Induced Coherent Control of Nitrogen-Vacancy Centers

氮空位中心的电场诱导相干控制

• DOI: 10.1103/physrevapplied.18.064031
• 发表时间: 2022
• 期刊: Physical Review Applied
• 影响因子: 4.6
• 作者: Yan, Gerald Q.;Li, Senlei;Yamamoto, Tatsuya;Huang, Mengqi;Mclaughlin, Nathan J.;Nozaki, Takayuki;Wang, Hailong;Yuasa, Shinji;Du, Chunhui Rita
• 通讯作者: Du, Chunhui Rita

Quantum sensing of local stray field environment of micron-scale magnetic disks

• DOI: 10.1063/5.0150709
• 发表时间: 2023-07
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: Jin-Jian Zhou;Gerald Q. Yan;Mengqi Huang;N. McLaughlin;C. Du;Hailong Wang