Measurement with a deployable quantum magnetometer

使用可部署的量子磁力计进行测量

• 批准号: 2744832
• 金额: --
• 依托单位: University of Strathclyde
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2744832
• 关键词: Measurement; deployable; quantum; magnetometer

Double-resonance optically pumped magnetometers (DR-OPMs) offer a powerful and flexible quantum sensing tool with applications in healthcare, geomagnetics, manufacturing and fundamental physics. The last decade has seen developments in the underpinning science and component microfabrication which result in greatly increased potential for impact in these real-world applications. OPMs now offer Femtotesla magnetic field resolution (part-per-billion sensitivity in Earth's field), a regime in which only cryogenic SQUID magnetometers offer comparable performance. However, compact, portable, cryogen-free OPMs can be used in many applications where the size and cost of SQUID magnetometers is prohibitive. OPMs will be applied to portable magneto-cardiography and magneto-encephalography for medical research and diagnosis, where their scalability and form factor unlock new capabilities for portable sensor arrays. In geomagnetic measurements the intrinsic calibration of OPM magnetometry against alkali atomic energy levels is a significant advantage over widely-used inductive magnetometers, offering calibration-free measurement for surveying, defence and navigation. OPMs can also be configured for resonant narrowband detection of oscillating magnetic fields in the sub-MHz band, benefiting from the system's frequency-invariant limiting quantum noise sources, rather than the classical Johnson-noise-limited inductive sensors widely used for these signals. This tuneable detection mode is a key technology for low-field hyperpolarised NMR in pharmaceutical and chemical manufacture. The sensitivity and accuracy of DR-OPMs also has important applications in networked fundamental physics searches for cosmological axions and domain walls. This project will focus on the development and demonstration of DR-OPM configurations tailored to maximise performance in specific applications. This will entail the development of sensor modes and control firmware in the laboratory, aiming to work at quantum-limited precision in an optimised test environment, leading on to sub-system optimisation and demonstration of field-ready prototypes in real-world applications. The development of techniques and system components in the lab will lead forward to the design and demonstration of field systems in collaboration with our network of end users. This work will build on our expertise in DR-OPM readout and feedback schemes and demonstrated capability in specialised subsystem design, including compact laser-optical systems and micro-fabricated alkali vapour cells. The combination of increasing subsystem performance and readiness with new techniques in DR-OPM operation, such as digital spin maser feedback schemes, places this research at a critical translational stage. Laboratory-based research developments now have potential for field application and rapid impact. Increasing end-user interest is driven by technology demonstration with increasingly high-performance devices. This project will exploit these opportunities, demonstrating and enhancing the impact of quantum sensors in magnetometry, and it will be an integral part of ongoing quantum technology development.

双谐波光学泵浦计（DR-OPMS）提供了一种功能强大且灵活的量子传感工具，该工具在医疗保健，地磁，制造和基本物理学中提供了应用。在过去的十年中，基础科学和组件微分化的发展，这在这些现实世界中的影响大大增加了潜力。 OPMS现在提供vesstotesla磁场分辨率（地球场中的零件灵敏度），在这种制度中，只有低温鱿鱼磁力计提供可比的性能。但是，紧凑，便携式，无冷冻OPM可用于许多应用，在许多应用中，鱿鱼磁力计的大小和成本都过于刺激。 OPMS将应用于用于医学研究和诊断的便携式磁性摄影和磁脑摄影，它们的可伸缩性和外形为便携式传感器阵列解锁了新的功能。在地磁测量中，与广泛使用的电感磁力计相对于碱原子能水平的OPM磁力计对OPM磁力计的内在校准是一个重要的优势，为测量，防御和导航提供了无校准测量。 OPM还可以配置用于子MHz频段中振荡磁场的谐振窄带检测，从系统的频率不变限制量子噪声源中受益，而不是经典的Johnson-Noise-Noise限制感应传感器广泛用于这些信号。这种可调的检测模式是药物和化学制造中低场高极化NMR的关键技术。 DR-OPMS的敏感性和准确性在网络基本物理搜索中搜索宇宙轴和域壁上也具有重要的应用。该项目将重点介绍量身定制的DR-OPM配置的开发和演示，以最大程度地提高特定应用程序的性能。这将需要在实验室中开发传感器模式并控制固件，以在优化的测试环境中以量子限制的精度工作，从而在现实世界应用中进行了子系统优化并演示了现场就绪的原型。实验室中技术和系统组件的开发将与我们的最终用户网络合作进行现场系统的设计和演示。这项工作将基于我们在DR-OPM读数和反馈方案方面的专业知识，并在专门的子系统设计中展示了能力，包括紧凑的激光光学系统和微型碱性碱蒸气单元。诸如数字旋转Maser反馈方案之类的新技术的增加子系统的性能和准备性与新技术的结合，将这项研究置于关键的转化阶段。现在，基于实验室的研究发展具有现场应用的潜力和快速影响。最终用户的兴趣不断增加，这是由越来越高的绩效设备的技术演示驱动的。该项目将利用这些机会，证明和增强量子传感器在磁力测定中的影响，这将是正在进行的量子技术开发的组成部分。