FRG: Coherence and Entanglement in Correlated Nanostructures

FRG：相关纳米结构中的相干性和纠缠

• 批准号: 0906521
• 负责人: Dale Van Harlingen
• 金额: $ 152万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-15 至 2014-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0906521&HistoricalAwards=false
• 关键词: FRG; Coherence; Entanglement; Correlated; Nanostructures

****NON-TECHNICAL ABSTRACT****The ability to control the flow of electrons through materials has been the key to technological progress in our society. Common electronic technology is based primarily on the ?classical? motion of electrons through metals or semiconductors. However, the next revolution in electronics will likely be based on the ?quantum mechanical? properties of electrons, such as their wave-like behavior and inherent ?spin?. These properties may form the basis of advanced cryptography and ultra-powerful ?quantum? computers. The goal of this research is to study and control such quantum electronics in nano-scale materials such as carbon nanotubes, superconducting wires, and magnetic wires. These materials are relevant because of their potential applications; they are also interesting because of the diverse phenomena stemming from their strongly interacting electrons. The research will target physics at the nano-scale, which is the next frontier for technology and where quantum properties are prevalent. A series of experiments supported by theories will work toward implementation of advanced quantum electronic devices and address fundamental, open questions regarding the behavior of electrons in nano-scale materials. The collaborative structure of the research will provide a rich environment for training undergraduates, graduate students, and postdoctoral researchers in a broad spectrum of nanotechnology and materials-related work. Educational aspects will be further integrated through the development of courses directly related to the proposed research and through research-related seminars and meetings that target high-school teachers, women, and underrepresented minorities.**** TECHNICAL ABSTRACT****The goal of this project is to observe and characterize the properties of correlated electron pairs at nanoscale interfaces between superconductors and strongly-correlated materials. Coherent electron pairs emerging from superconducting sources will be studied in materials such as nanotubes, graphene, and ferromagnetic wires. In addition, methods for splitting injected Cooper pairs and then non-locally preserving quantum correlations will be developed, with the ultimate goal of realizing solid-state quantum entanglers. Experimental measurements of transport, phase coherence, and noise correlations will be supported by theoretical studies. The research will address major issues such as the influence of competing ordered states, the proximity effect at superconductor-correlated state interfaces, quantum phenomena in reduced dimensions, and optimal configurations for entanglement tests. This work will enable significant progress in our understanding of strongly-correlated nanoscale systems, and may form the basis of future solid-state quantum cryptography, teleportation, and quantum computation devices. The collaborative structure of the research will provide a rich environment for training undergraduates, graduate students, and postdoctoral researchers in a broad spectrum of nanotechnology-related work. Educational aspects will be further integrated through the development of courses directly related to the proposed research and through research-related seminars and meetings that target high-school teachers, women, and underrepresented minorities.

* 非技术性摘要 * 控制电子在材料中流动的能力一直是我们社会技术进步的关键。普通电子技术主要基于？古典音乐？电子通过金属或半导体的运动。然而，下一次电子革命可能会基于？量子力学？电子的性质，如它们的波动行为和固有的？旋转？这些属性可能构成先进的密码学和超强大的？量子？电脑这项研究的目标是研究和控制纳米尺度材料中的量子电子学，如碳纳米管，超导导线和磁性导线。这些材料因其潜在的应用而具有相关性;它们也很有趣，因为它们的电子强烈相互作用产生了多种现象。这项研究将针对纳米尺度的物理学，这是技术的下一个前沿，量子特性在其中很普遍。一系列由理论支持的实验将致力于实现先进的量子电子器件，并解决有关纳米级材料中电子行为的基本开放问题。该研究的合作结构将提供一个丰富的环境，培养本科生，研究生和博士后研究人员在广泛的纳米技术和材料相关的工作。将通过制定与拟议研究直接相关的课程，并通过针对高中教师、妇女和代表性不足的少数群体的与研究有关的研讨会和会议，进一步纳入教育方面。技术摘要 * 该项目的目标是观察和表征超导体和强相关材料之间纳米级界面上相关电子对的特性。从超导源产生的相干电子对将在纳米管、石墨烯和铁磁线等材料中进行研究。此外，还将开发分裂注入的库珀对，然后非局部保持量子关联的方法，最终目标是实现固态量子纠缠。实验测量的运输，相位相干性和噪声相关性将支持理论研究。该研究将解决主要问题，如竞争有序态的影响，超导体相关态界面的邻近效应，降低维度的量子现象以及纠缠测试的最佳配置。这项工作将使我们对强相关纳米系统的理解取得重大进展，并可能成为未来固态量子密码学，隐形传态和量子计算设备的基础。该研究的合作结构将提供一个丰富的环境，培养本科生，研究生和博士后研究人员在广泛的纳米技术相关的工作。将通过制定与拟议研究直接相关的课程，并通过针对高中教师、妇女和代表性不足的少数群体的与研究有关的研讨会和会议，进一步整合教育方面的内容。