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Optical Control of Quantum States in Semiconductor Nanostructures

半导体纳米结构中量子态的光学控制

基本信息

批准号：
EP/G001642/1
负责人：
Maurice Skolnick
金额：
$ 371.28万
依托单位：
University of Sheffield
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2008
资助国家：
英国
起止时间：
2008 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FG001642%2F1
关键词：
Optical Control Quantum States Semiconductor

项目摘要

The interactions between light and matter in the solid state underpin a wide variety of important areas of science and technology, ranging from commercially available devices such as light emitting diodes and lasers, to very futuristic topics such as logic gates based on quantum mechanical principles, writing and reading of single spins, storage of single photons, and new types of coupled matter-photon particles exhibiting exotic properties such as condensation into a coherent state. However, it is only within approximately the last five years that the technologies have emerged to accurately prepare and control the properties of electrons in fully confined structures, and to fabricate small volume high performance nano-cavities to control the properties of photons, and thus to access many of the above very forward-looking opportunities.This leads to the subject area of the present proposal: we aim to control the quantum states of electrons and photons and of their mutual interactions to produce new advances in quantum information science, quantum optics and interacting coherent systems. This will be achieved by a highly interactive programme comprising the essential component parts of advanced experimentation and theory, and well developed crystal growth and device technology, both within our own laboratories and with collaborators within the UK and Europe.The research we propose is closely interlinked, and focuses into four related areas, all involving similar samples, experimental techniques and theoretical concepts, in the areas of ultrafast quantum control, nano-magnetic systems, entanglement of remote quantum systems, and the condensed high density state which arises in specially designed optical cavities. It is expected to result in major advances towards a number of long-term goals, for example: the exploitation of the long coherence time of electron spins for quantum information processing, quantum logic in semiconductor systems, the development of scalable qubit systems based either on excitons or photons, and superfluidity and quantum oscillations in designer-controlled interacting systems.Support is requested via Programme Grant funding of the Physics Programme of EPSRC. Such funding is specifically designed to permit the establishment of coherent activities which are able to compete successfully on the international scale, and has been critical to our recent successes.

固态中光和物质之间的相互作用支撑着广泛的重要科学和技术领域，从商业上可用的设备，如发光二极管和激光，到非常未来主义的课题，如基于量子力学原理的逻辑门，单自旋的写入和读取，单光子的存储，以及新型物质-光子耦合粒子显示出奇异的性质，如凝聚成相干态。然而，直到最近五年左右，才出现了精确地制备和控制完全受限结构中电子的性质，以及制造小体积高性能纳米腔来控制光子性质的技术，从而获得了许多上述非常具有前瞻性的机会。这导致了本提议的主题领域：我们的目标是控制电子和光子的量子态及其相互作用，以在量子信息科学、量子光学和相互作用的相干系统方面产生新的进展。这将通过一个高度互动的项目来实现，该项目包括先进的实验和理论的基本组成部分，以及完善的晶体生长和设备技术，在我们自己的实验室内，以及与英国和欧洲的合作伙伴。我们建议的研究密切相关，并集中在四个相关的领域，都涉及类似的样本，实验技术和理论概念，在超快量子控制，纳米磁系统，远程量子系统的纠缠，以及在特殊设计的光腔中出现的凝聚高密度态。预计它将在一些长期目标方面取得重大进展，例如：利用电子自旋的长相干时间用于量子信息处理，半导体系统中的量子逻辑，基于激子或光子的可扩展量子比特系统的开发，以及设计者控制的相互作用系统中的超流和量子振荡。这类资金专门用于建立能够在国际范围内成功竞争的协调一致的活动，这是我们最近取得成功的关键。