Ultrafast spectroscopy of semiconductor quantum dots

- 研究背景的简要描述，包括潜在的影响研究将在EPSRC计划资助的范围内进行，该计划资助的内容是“半导体量子光子学：通过纳米光子设计控制自旋、激子和光子相互作用”。“学生奖学金将集中在“自旋量子位”资助的WP 2上。该研究对开发新的半导体器件具有潜在的影响，这些器件可以在固态平台上实现，用于量子技术的应用。目的和目标目的是展示半导体量子点中电子和/或空穴自旋的片上相干控制。研究方法，包括工程和物理科学的新知识或新技术，将被调查的方法是基于使用短激光脉冲操纵自旋的光学技术。电子或空穴将被限制在半导体量子点中，利用纳米光子学将增强光与物质的相互作用。实现这些目标将需要开发一些新技术：* 设计具有与纳米光子制造兼容的明确定义的电荷状态的量子点晶片 * 设计优化的光子结构，用于光子的输入和输出耦合，并使用纳米光子腔和波导最大化光-物质相互作用。纳米光子结构中自旋相干性的研究 * 自旋相干光学控制技术的开发-与EPSRC的战略和研究领域相一致该计划的赠款由EPSRC的光子材料领域提供资金，并将用于量子技术计划。

- Brief description of the context of the research including potential impactThe research will be carried out within the context of the EPSRC Programme Grant on "Semiconductor Quantum Photonics: Control of Spin, Exciton and Photon Interactions by Nano-Photonic Design." The studentship will be focussed on WP2 of the grant on "Spin qubits". The research has potential impact to develop new semiconductor devices that can be implemented in solid-state platforms for applications in quantum technologies.- Aims and objectivesThe aim is to demonstrate on-chip coherent control of electron and/or hole spins in semiconductor quantum dots.- The research methodology, including new knowledge or techniques in engineering and physical sciences that will be investigatedThe methodology is based on optical techniques for manipulating spins using short laser pulses. The electrons or holes will be confined in semiconductor quantum dots, and the light-matter interaction will be enhanced using nano-photonics. The achievement of the goals will require development of a number of new techniques:* design of quantum dot wafers with well-defined charge states that are compatible with nano-photonic fabrication* design of optimised photonic structures for in- and out-coupling of photons and maximisation of the light-matter interaction using nano-photonic cavities and waveguides.* investigation of the spin coherence in the nano-photonic structures* development of techniques for the coherent optical control of spins- Alignment to EPSRC's strategies and research areasThe programme grant is funded by EPSRC's Photonic Materials area, and will feed into the quantum technologies programme.