时间：2017.7.28 14:00-15:00
地点：电信学院楼703教室
邀请人：王超副教授
Abstract
It was recently conjectured by Vivo, Pato, and Oshanin [Phys. Rev. E 93, 052106 (2016)] that for a bipartite quantum system in a pure state, the variance of the von Neumann entropy of a subsystem is given by an elegant formula involving polygamma functions. In the first part of the talk, we give a proof of the VPO’s conjecture. In the second part, we discuss the implication of the proof to some long-standing open problems on the fluctuations of mutual information of MIMO wireless channels.
Speaker bio
Lu Wei received the B.Eng. degree from Xi’an Jiaotong University, China, the M.Sc. degree (with distinction) from Helsinki University of Technology, Finland, and the D.Sc. degree (with distinction) from Aalto University, Finland, in 2006, 2008, and 2013, respectively. He held postdoctoral positions at the Department of Mathematics and Statistics, University of Helsinki, Finland, from 2013 to 2015 and at the School of Engineering and Applied Sciences, Harvard University, USA, from 2015 to 2016. Since fall 2016, he is an Assistant Professor with the Department of Electrical and Computer Engineering, University of Michigan-Dearborn, USA. His research interests lie in random matrix theory with applications to communications theory and information theory of both classical and quantum.
