Microwave detection using Rydberg excitons in cuprous oxide

将承担的技术工作DSTL的案例学生的目标是在利用激子态进行灵敏的微波探测的基础上开创一个新的方向。我们希望证明激子-电子和空穴的束缚态-可以同时强烈耦合到微波和光学辐射，实现微波到光学的转换和检测。该项目建立在EPSRC与卡迪夫大学(Pi Dr Stephen Lynch)合作的为期4年的EPSRC拨款的基础上，该拨款始于2017年1月5日(固态超级原子)，并将提供支持设备。案例奖独立于与卡迪夫大学的现有合作，但两个项目之间存在一些交叉。达勒姆/卡迪夫合作的工作目前的成熟程度自2015年以来一直存在；我们有初步结果(观察到主量子数n=12的里德堡激子)，并开发了样品制备和光谱分析的方法。微波传感方向在一定程度上得到了我们在原子Rydberg州的积极经验的支持，但它具有很高的创新性，并带有一定程度的风险。作为案例奖的一部分，DSTL将接待学生进行为期3个月的安置，提供获得知识的途径和招生的潜力。其他好处包括继续获得有关潜在技术的专业知识和建议。如有需要，可提交报告。

Technical Work to be UndertakenThe objective of the CASE studentship with DSTL is to start a new direction based on the use of the excitonic state for sensitive microwave detection. We hope to demonstrate the excitons - bounds states of electrons and holes - can be simultaneously strongly coupled to microwave and optical radiation, enabling microwave to optical conversion and detection.It builds on a 4 year EPSRC grant that started on 01/05/2017 (Solid State Superatoms), which is collaboration with Cardiff University (PI Dr Stephen Lynch), and which will provide the underpinning equipment. The CASE award is independent of the existing collaboration with Cardiff University, but there is some cross-over between the two projects.Current Level of Maturity of the Work The Durham/Cardiff collaboration has existed since 2015; we have preliminary results (observation of Rydberg excitons up to principal quantum number n=12), and developed methods for sample preparation and spectroscopy. The microwave sensing direction is underpinned to some extent by our positive experience with atomic Rydberg states, but is highly innovative and carries some degree of risk.Expected Deliverables As part of a CASE award, DSTL would host the student for a 3 month placement, providing access to knowledge and the potential for recruitment. Additional benefits include continuing access to expertise and advice on potential technologies. Reports can be delivered if required.