Optical Processing of Information in Doped Semiconductors

掺杂半导体中信息的光学处理

• 批准号: 0605801
• 负责人: Carlo Piermarocchi
• 金额: $ 33万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-15 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0605801&HistoricalAwards=false
• 关键词: Optical; Processing; Information; Doped; Semiconductors

TECHNICAL SUMMARY:This award supports theoretical research and education on fundamental phenomena in condensed matter and materials. It contributes to the intellectual foundations of future cyberinfrastructure. The PI seeks a better understanding of coherent photo-magnetism in semiconductor nanostructures. The control of magnetization of a medium by ultra-fast laser pulses may be an efficient way to provide fast memories and information processing. In many magneto-optic devices, the control of the magnetization is realized through thermal effects produced by the absorption of light or by photo-doping. In this project, the PI will investigate the theory of much faster non-thermal and non-dissipative control methods in which the light is not absorbed by the medium. Given recent advances in nano-optics techniques, this coherent optical control can be realized at the nano-scale.The PI will investigate coherent photo-magnetic effects in bulk, quantum dots, and micro-cavities. He plans to consider nano-systems based on Mn-doped semiconductors, which are currently being investigated for their ferromagnetic properties. Light can induce magnetic phase transitions in these materials and it can also control the critical temperature and the orientation of magnetization. The PI aims to identify materials, structures, and control parameters for an optimal implementation of this coherent control, and to address fundamental questions on the nature of ferromagnetism and phase transitions under strong and non-equilibrium light-matter coupling.The project will involve collaborations with theorists and experimentalists in the EU and in the US. With cofunding from the Europe and Eurasia Program in OISE, the PI aims to initiate collaboration with a theorist in Greece and provide international research experience for students. Graduate and undergraduate students will be involved in the project and will be trained in quantum optics, solid state physics and statistical mechanics. The research involves the development of a suite of computational tools for the calculation of the nonlinear optical properties of magnetic semiconductors that will be made public. The involvement of students in the development of those tools will enable them to expand their skills in designing numerical codes to solve complex problems.NON-TECHNICAL SUMMARY:This award supports theoretical research and education on fundamental phenomena in condensed matter and materials. It contributes to the intellectual foundations of future cyberinfrastructure. The PI will investigate how quantum mechanical states in materials can be manipulated by lasers and the novel phenomena that arise as a consequence. Of particular interest is the mechanism through which light can manipulate magnetic states of impurities in semiconductors and nanostructures and new phenomena that can arise. The PI aims to address fundamental questions on the nature of ferromagnetism and phase transitions as a consequence of the strong interaction of light with materials.Optical control suggests an intriguing active approach to materials science: the goal of such studies lies beyond the investigation of the general optical properties of materials, and directly focuses on fundamental condensed matter and quantum phenomena that may lead to the design of optical devices with a functional role in, for example, memories, information processors, or network components. This project may impact information technology by laying the intellectual foundations of phenomena that may lead to new, non-dissipative and reversible methods of computation and data storage, based on light. These coherent control schemes will suggest new ideas for quantum computing implementations, as well as for present technology applications, such as magneto-optical recording or tunable magnetic switches and amplifiers.The project will involve collaborations with theorists and experimentalists in the EU and in the US. With cofunding from the Europe and Eurasia Program in OISE, the PI aims to initiate collaboration with a theorist in Greece and provide international research experience for students. Graduate and undergraduate students will be involved in the project and will be trained in quantum optics, solid state physics and statistical mechanics. The research involves the development of a suite of computational tools for the calculation of the nonlinear optical properties of magnetic semiconductors that will be made public. The involvement of students in the development of those tools will enable them to expand their skills in designing numerical codes to solve complex problems.

技术摘要：该奖项支持有关凝结物和材料中基本现象的理论研究和教育。它为未来网络基础设施的智力基础做出了贡献。 PI寻求更好地了解半导体纳米结构中的相干光磁性。通过超快速激光脉冲控制培养基的磁化可能是提供快速记忆和信息处理的有效方法。在许多磁化器件中，通过光吸收或通过照相掺杂产生的热效应来实现磁化的控制。在该项目中，PI将研究更快的非热和非脉冲控制方法的理论，其中光不会被介质吸收。鉴于纳米磁技术技术的最新进展，可以在纳米尺度上实现这种连贯的光学控制。他计划考虑基于MN掺杂的半导体的纳米系统，目前正在研究其铁磁特性。光可以在这些材料中诱导磁相变，它也可以控制磁力化的临界温度和方向。 PI旨在确定该相干控制的最佳实施材料，结构和控制参数，并解决有关铁磁性和相位偶联的基本问题。通过来自OISE的欧洲和欧亚大陆计划的Cofund，PI旨在与希腊的理论家合作，并为学生提供国际研究经验。研究生和本科生将参与该项目，并将接受量子光学，固态物理学和统计力学的培训。该研究涉及开发一套计算工具，以计算将公开的磁性半导体的非线性光学性质。学生参与这些工具的开发将使他们能够扩展自己在设计数值代码以解决复杂问题的技能。没有技术摘要：该奖项支持理论研究和关于凝结物和材料中基本现象的理论研究和教育。它为未来网络基础设施的智力基础做出了贡献。 PI将研究材料中的量子机械状态如何通过激光器和结果产生的新现象来操纵。特别感兴趣的是光线可以操纵半导体和纳米结构中杂质的磁性状态以及可能出现的新现象的机制。 PI的目的是解决有关铁磁主义性质和由于光与材料的强烈相互作用而导致的基本问题。光学控制表明，一种有趣的材料科学的活跃方法：此类研究的目的超出了材料的一般光学特性的研究，并直接介绍了与基本凝聚力和量子造型的一般性作用，该典型的作用是一种选择，而不是基本的典范，而构成了一种既有的作用，则在某种程度上既可以又有典型的作用。记忆，信息处理器或网络组件。该项目可能会通过基于光基于光的现象，可能导致新的，非疾病和可逆的计算和数据存储方法来影响信息技术。这些连贯的控制方案将为量子计算实施以及当前的技术应用（例如磁光记录或可调磁性开关和放大器）提出新的想法。该项目将涉及与欧盟和美国理论家和实验者的合作。通过来自OISE的欧洲和欧亚大陆计划的Cofund，PI旨在与希腊的理论家合作，并为学生提供国际研究经验。研究生和本科生将参与该项目，并将接受量子光学，固态物理学和统计力学的培训。该研究涉及开发一套计算工具，以计算将公开的磁性半导体的非线性光学性质。学生参与这些工具的开发将使他们能够扩展自己在设计数值代码以解决复杂问题的技能。