Nanofabrication of Optical Semiconductor Devices for use in Quantum Sensors

该博士项目旨在开发适用于特定量子传感器系统的光子组件。基于半导体波导的光子器件将被设计和纳米加工，用于磁脑图测量中使用热Rb原子原子源(波长780 nm)的光学磁测量传感器，以及用于基于钾原子(波长767 nm或770 nm)的紧凑型玻色-爱因斯坦凝聚显微镜所需的光学开关。这将发展半导体材料表征和纳米制造方面的专业知识。使用光学模拟软件将允许设计合适的外延结构和多模干涉器件。在裸芯的光学插入损耗测量成功之后，样品将被安装在商业光电封装中。然后将该器件用于原子传感器，并将其磁检测性能与现有数据进行比较。该项目涉及将半导体材料完全转化为系统组件，并为英国量子技术公司未来的创新提供可靠的专业知识。

This PhD project is aimed at developing photonic components adapted for specific quantum sensor systems. Photonic devices based on semiconductor waveguides will be designed and nanofabricated for use in the optical magnetometry sensors using atomic sources of thermal Rubidium atoms (wavelength 780 nm) in magneto-encephalography measurements and for optical switches necessary for a compact Bose-Einstein Condensate microscope based on cold atoms of Potassium (wavelength either 767 nm or 770 nm). This will develop expertise in semiconductor materials characterisation and nanofabrication. Access to optical simulation software will allow the design of suitable epitaxial structures and multimode interference devices. Following successful optical insertion loss measurements of bare die, samples will be mounted in commercial opto-electronic packages. The devices will then be used in the atomic sensor and the magnetic detection performance compared with existing data. The project involves the full transformation of semiconductor material to a systems component and provides sound expertise in future innovation in UK Quantum Technologies.