MRI: Development of a Quantum Engineering Laboratory

MRI：量子工程实验室的发展

• 批准号: 0420775
• 负责人: Alex Smirnov
• 金额: --
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0420775&HistoricalAwards=false
• 关键词: MRI; Development; Quantum; Engineering; Laboratory

This MRI proposal seeks NSF funds to develop unique cross-disciplinaryQuantum Engineering Laboratory for comprehensive characterization and developmentof future generation of information devices that are based on quantum principles.Particularly, we propose to develop new material characterization tool capable ofsimultaneous millimeter-wave, magnetic resonance, and electrical experimentalmeasurements (correlated spin and charge transport measurements) on arrays of single-electron quantum dots and other novel semiconductor materials.Intellectual merit of the proposed activity. The principal features of the proposedtool are (1) milli-Kelvin temperature and high magnetic field capabilities, required toreach high spin polarization and a quantum regime for single-electron informationdevices, and (2) capability for simultaneous electrical & magnetic measurement, requiredto examine the spin physics of charged carriers. Acquiring such a capability we will beable to understand the fundamental quantum physics in such systems and to exploit thespin degree of freedom for the new generation of information and communication devicesthat are based on quantum principles.To achieve these goals we propose to develop the first of its kind in the worldmaterials characterization tool which will utilize high homogeneity (at least 10 ppm) 9 Tmagnet with the cold-bore to accommodate a top-loading sorption refrigerator with thebase temperature of ca. 300 mK. It is proposed to develop a specialized top-loadinginsert to conduct synchronized electrical measurements while the spin states aremanipulated by millimeter-wave pulses at 95, 130, and, possibly, 225 GHz. Theinstrument will be also capable of comprehensive electrical characterization of quantumdot materials at high spin polarization states as well as for electron spin resonance (ESR)measurements to understand the mechanisms of relaxation and spin-spin coupling.The broader impacts of the proposed activity. The major impact of the proposedactivity will be in enhancing the infrastructure for research and education. Specifically,development of the Quantum Engineering Laboratory at NCSU fits the goal of the NSFMRI program because it will serve the following high priority areas: (1) to fill the gapbetween materials characterization facilities currently available in the USA and newquantum information devices which are theoretically proposed and which prototypes arealready fabricated and will be fabricated in the upcoming months; (2) to facilitate thediscovery of fundamental phenomena in spin-coupled and other materials containingunpaired electron spins for quantum information processing; (3) to foster the integrationof these multidisciplinary efforts in quantum information devices and technology and totrain students in this emerging technology;We are engaged in developing advanced instruction in this field throughproviding courses in engineering and chemistry at NCSU. Specifically, it is proposedthat students and postdoctoral research associates will participate in all aspects of theinstrument development and materials research studies. To publicize the development ofnext generation characterization tool it is proposed to hold a workshop during the grantperiod to educate the scientific community of this emerging technology. Twice a year, ashort training course for students at NCSU and UNC will be offered. The coursematerials will be made freely available via Internet.We believe that these quantum electronic devices will become important to ourNation and therefore are in support of the national research infrastructure. This belief issupported by NSFs roadmap in information science and the developing roadmap inQuantum Computing being currently prepared by a coalition of government researchfunding agencies.

该MRI提案寻求NSF资金来开发独特的跨学科量子工程实验室，以全面表征和开发基于量子原理的下一代信息设备。特别是，我们建议开发新的材料表征工具，能够同时对单电子量子点阵列和其他新型半导体材料进行毫米波，磁共振和电学实验测量（相关自旋和电荷输运测量）。所建议活动的智力价值。所提出的工具的主要特点是：(1)毫开尔文温度和高磁场能力，需要达到高自旋极化和单电子信息器件的量子状态；(2)同时进行电和磁测量的能力，需要检查带电载流子的自旋物理。获得这样的能力，我们将能够理解这种系统中的基本量子物理学，并利用基于量子原理的新一代信息和通信设备的最大自由度。实现这些目标,我们提出发展中的第一个的worldmaterials表征工具,将利用高同质性(至少10 ppm) 9 Tmagnet cold-bore适应仅需吸附冰箱底部的温度ca。300可拟开发一个专门top-loadinginsert进行同步电测量而自旋态aremanipulated毫米波脉冲在95年,130年,可能225 GHz。该仪器还将能够在高自旋极化状态下对量子点材料进行全面的电学表征，并进行电子自旋共振（ESR）测量，以了解弛豫和自旋-自旋耦合的机制。拟议活动的更广泛影响。拟议活动的主要影响将是加强研究和教育的基础设施。具体来说，NCSU量子工程实验室的发展符合NSFMRI计划的目标，因为它将服务于以下高优先领域：(1)填补美国目前可用的材料表征设施与理论上提出的新量子信息设备之间的空白，这些设备已经制造并将在未来几个月内制造原型；(2)促进发现自旋耦合和其他包含不配对电子自旋的材料中的基本现象，用于量子信息处理；(3)促进量子信息设备和技术中这些多学科努力的整合，并培养这一新兴技术的学生；我们通过开设工程和化学课程，致力于发展这一领域的先进教学。具体来说，建议学生和博士后研究助理将参与仪器开发和材料研究的各个方面。为宣传下一代表征工具的发展，建议在资助期间举办研讨会，向科学界普及这一新兴技术。每年两次为北卡罗来纳大学和北卡大学的学生提供短期培训课程。课程材料将通过互联网免费提供。我们相信这些量子电子设备将对我们的国家变得重要，因此支持国家研究基础设施。这一信念得到了国家科学基金会信息科学路线图和量子计算发展路线图的支持，该路线图目前由一个政府研究资助机构联盟准备。