报告时间：2022年8月25日 周四14:30

地点：物质科研楼C404报告厅

报告人：袁海东 香港中文大学 教授

报告题目: Incompatibility measures in multi-parameter quantum estimation under hierarchical quantum measurements

报告摘要: The incompatibility of the optimal measurements for the estimation of different parameters constraints the achievable precisions in multi-parameter quantum estimation. Understanding the tradeoff induced by such incompatibility is thus a central topic in quantum metrology. Here we provide an approach to study the incompatibility in terms of information geometry under general p-local measurement, which are the measurements performed collectively on at most p copies of quantum states. We demonstrate the power of the approach by present a hierarchy of analytical tradeoff relations induced by the incompatibility. 

报告人简介：Haidong Yuan received his B.E. in Electronic Engineering from Tsinghua University, Beijing, China, He received his M.A. in Engineering science and Ph.D. in Applied Mathematics from Harvard University. He did his postdoctoral work at Harvard University and Massachusetts Institute of Technology. He is currently an associate professor at the department of Mechanical and Automation Engineering, the Chinese University of Hong Kong. His research interests include quantum control, quantum metrology and quantum computation.