Metrology of multi-photon states for quantum technology

量子技术是政府和科技巨头的优先事项，他们在最近的项目上投入了数十亿美元。人们普遍认为，光子是实现量子安全通信、分布式计算或成像的唯一可行途径。创新催生了众多英国量子光子学初创企业，包括Nu quantum、ORCA、Duality、Wave photonics、Arqit、Aeqig。许多人使用半导体技术来制造、控制和探测光子。随着技术的成熟，可以创造和操纵的光子态的复杂性也在增长，每隔几个月就会在最具影响力的期刊上报道突破。该项目将开发一个工具包来对这些多光子态进行基准测试，如果最终用户对走向市场的设备有信心，这是迫切需要的。您将有机会在卡迪夫创建和表征半导体量子点源，在国家外延设施中生长的样品（通过第二位主管Ian Farrer博士），并与Alastair Sinclair博士和Phil Dolan博士一起与英国计量卓越中心国家物理实验室合作。

Quantum Technology is a priority for governments and tech giants, who have spent billions on recent initiatives. It is widely accepted that photons are the only viable route for achieving quantum-secure communications, distributed computing or imaging. Innovation has resulted in numerous UK quantum- photonics start-ups including Nu Quantum, ORCA, Duality, Wave Photonics, Arqit, Aeqig. Many use semiconductor technology to create, control and detect photons. As technology has matured, the complexity of the photonic states that can be created and manipulated has grown, with breakthroughs reported every few months in the highest impact journals. This project will develop a toolkit to benchmark these multiphoton states, which is urgently required if end-users are to have confidence in the devices heading towards the market. You will have the chance to create and characterise semiconductor quantum-dot sources in Cardiff, with samples grown in the National Epitaxy Facility (via second supervisor Dr Ian Farrer), and to work with the National Physical Laboratory, the UK's metrology centre-of-excellence, with Dr Alastair Sinclair and Dr Phil Dolan.