Quantum enhanced multi-parameter estimation

量子增强多参数估计

• 批准号: 2266365
• 金额: --
• 依托单位: University of Bristol
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2266365
• 关键词: Quantum; enhanced; multi; parameter; estimation

Researchers have applied Fisher information to quantify the precision in estimating single parameters such as absorption or phase in simple optical systems and to report instances where quantum strategies can perform beyond the classical limit. Recently, the field has grown to explore how to perform multi-parameter estimation beyond the classical limit. Key to this quantum metrology has been identifying the classical precision limit in parameter estimation - after all, you need to define a limit in order to surpass it. The motivation behind this PhD project will be to explore if this classical limit is always appropriate and explore what a classical limit in resources means from a sensing perspective. We will strive to better define the classes of measurement that correspond to each, relevant, defined classical limit for realistic imaging and sensing scenarios, inspired by complexity classes that group together different computational resources according to the quantified resources required.

研究人员应用Fisher信息来量化简单光学系统中估计单个参数（如吸收或相位）的精度，并报告量子策略可以超越经典极限的实例。最近，该领域已经发展到探索如何执行超过经典极限的多参数估计。这个量子计量学的关键是确定参数估计中的经典精度极限-毕竟，你需要定义一个极限才能超越它。这个博士项目背后的动机将是探索这个经典极限是否总是合适的，并从传感的角度探索资源中的经典极限意味着什么。我们将努力更好地定义测量的类别，这些类别对应于现实成像和传感场景的每个相关的定义的经典限制，这些限制受到复杂性类别的启发，这些复杂性类别根据所需的量化资源将不同的计算资源组合在一起。