Cavity-QED with multi-species ion crystals

具有多物质离子晶体的腔 QED

• 批准号: 2831123
• 金额: --
• 依托单位: University of Sussex
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2831123
• 关键词: Cavity; QED; multi; species; ion

The aim of the proposed PhD project is to investigate the use of two-species ion crystals in the cavity-based implementation of the photonic link between quantum processors. In the first part of the project, strontium ions will be employed as a refrigerant to enable the continuous, high-rate generation of entanglement between a co-trapped calcium ion and cavity photons. Removing the need for laser cooling of the calcium ion will increase the entanglement rate without compromising the fidelity. The second stage of the project will then include quantum state transfer between the two species consecutive to the generation of ion-photon entanglement. Here the focus will be on the transfer of the ion-photon entangled state from the calcium ion, initially used to generate the entanglement via a cavity-assisted transition, to the co-trapped strontium ion.To this end, an existing ion-cavity system will be extended to operate with both ion species and the QCS Hub-funded laser systems for strontium and calcium ions will be used.The project will be pursued in collaboration with the group of David Lucas at Oxford, which has experience in working with two-species ion crystals. The PhD student will spend some time at Oxford to learn from David's team and transfer some of the know-how to Sussex.1. How the project would contribute to the Hubs' goals: The project will contribute to achieving Deliverable 1.9. As identified in the first phase of the Quantum Technology Hub Programme, ion-cavity systems are essential to achieve a fully scalable quantum computer and this PhD project will help to deliver such a scalable technology and demonstrate its functionality. Extending this to a two-ion species operation is a significant step towards a practical implementation of an ion-based quantum computer.2. How the studentship would fit in with any planned QCS staffing on the project: The student will be supervised by Prof Keller and will work with Dr Graham Stutter (QCS Hub funded postdoc) and existing senior PhD students.3. How the project would fit in with the wider QCS programme - would there be opportunities for students to work in collaboration with other groups and partner institutions: While the main work is based in Sussex, during the initial phase of the project frequent discussions with the ion-trapping group at Oxford are expected to take advantage of their expertise in working with two-species ion crystals. To make full use of this, the student will spend time in the group at Oxford to learn how to work with two-species ion crystals.4. What facilities / apparatus would be available for the student to use in the project, what training would be provided and by whom: Facilities: The Sussex group provides a fully functioning ion trap system with all lasers that are required for the two-species experiment.Training: The student will join the Sussex Doctoral School, which provides training in general research skills, transferable skills and commercialisation training (through the Sussex Innovation Centre). In addition, the student will receive training in QIP and QT through our taught modules and QT hub activities. The main training will be through their laboratory work where the student will receive training in ion trap technology, laser control of trapped ions, electronics, optics and vacuum technology. Prof Keller and his research team will deliver this training.5. How you will ensure there is a diverse pool of applicants for the studentship: A gender-balanced panel will conduct the PhD student recruitment and the advertisement will be checked for gender bias. All staff is required to be trained in recruitment, and equality and diversity. In particular, training in unconscious bias is required for all staff on recruitment in interview panels. In general, the Sussex School for Mathematical and Physical sciences is committed to promote diversity and equality at every step in the recruitment process

拟议的博士项目的目的是研究两种离子晶体在量子处理器之间基于腔的光子链路实现中的使用。在该项目的第一部分中，锶离子将被用作制冷剂，以使共同捕获的钙离子和腔光子之间能够连续、高速地产生纠缠。消除钙离子激光冷却的需要将增加纠缠率而不影响保真度。该项目的第二阶段将包括在离子-光子纠缠产生之后两个物种之间的量子态转移。这里的重点是离子-光子纠缠态从钙离子的转移，最初用于通过腔辅助跃迁产生纠缠，到共捕获的锶离子。为此，现有的离子腔系统将扩展到对两种离子种类进行操作，并且将使用 QCS Hub 资助的用于锶和钙离子的激光系统。该项目将与牛津大学的 David Lucas 小组合作进行，该小组已具有使用两种离子晶体的经验。博士生将在牛津大学度过一段时间，向大卫的团队学习，并将一些专业知识转移到苏塞克斯1。该项目将如何为中心的目标做出贡献：该项目将有助于实现可交付成果 1.9。正如量子技术中心计划第一阶段所确定的，离子腔系统对于实现完全可扩展的量子计算机至关重要，该博士项目将有助于提供这种可扩展的技术并展示其功能。将其扩展到两种离子物质的操作是迈向基于离子的量子计算机的实际实施的重要一步。2．学生奖学金如何与该项目中任何计划的 QCS 人员配置相适应：学生将由 Keller 教授监督，并将与 Graham Stutter 博士（QCS 中心资助的博士后）和现有的高年级博士生一起工作。3。该项目如何适应更广泛的 QCS 计划 - 学生是否有机会与其他团体和合作机构合作：虽然主要工作位于苏塞克斯，但在项目的初始阶段与离子进行频繁的讨论牛津大学的捕获小组预计将利用他们在处理两种离子晶体方面的专业知识。为了充分利用这一点，学生将花时间在牛津大学的小组中学习如何使用两种离子晶体。4。学生在项目中可以使用哪些设施/仪器，将提供哪些培训以及由谁提供： 设施：苏塞克斯小组提供了功能齐全的离子阱系统，其中包含两种物种实验所需的所有激光器。培训：学生将加入苏塞克斯博士学院，该学院提供一般研究技能、可转移技能和商业化培训（通过苏塞克斯创新中心）。此外，学生还将通过我们的教学模块和 QT 中心活动接受 QIP 和 QT 培训。主要培训将通过实验室工作进行，学生将接受离子阱技术、捕获离子的激光控制、电子、光学和真空技术方面的培训。凯勒教授和他的研究团队将提供这次培训。5。如何确保学生奖学金的申请者群体多样化：性别平衡的小组将进行博士生招募，并检查广告是否存在性别偏见。所有员工都必须接受招聘、平等和多样性方面的培训。特别是，需要对面试小组招聘的所有工作人员进行无意识偏见方面的培训。总的来说，苏塞克斯数学和物理科学学院致力于在招聘过程的每一步促进多样性和平等