主题：Ultimate precision limit for quantum magnetometry
Haidong Yuan received his Bachelor’s degree from Tsinghua University and PhD from Harvard University. He then did his postdoctoral work at Massachusetts Institute of Technology. From 2012 to 2014 he was an assistant professor at the department of Applied Mathematics, the Hong Kong Polytechnic University, since Sep 2014 he is with the department of Mechanical and Automation Engineering, the Chinese University of Hong Kong as an assistant professor.
Measurement and estimation of the magnetic field is essential for many practical applications, where the main quest is to find out the highest achievable precision with given resources and design schemes to attain it. In this talk I will present the ultimate precision that can be achieved for quantum magnetometry with the optimal entangled probe states. I will talk about how to further improve the precision with optimal quantum controls.