报告题目 (Title)：Quantum information theory and preserver problems （量子讯息论与保持问题）

报告人 (Speaker)： 黄毅青 教授（台湾中山大学）

报告时间 (Time)：2023年10月10日(周二) 14:00-17:00

报告地点 (Place)：校本部F309会议室

邀请人(Inviter)：王卿文 教授

主办部门：理学院数学系

报告摘要：As a mathematician, I will present my works on the quantum information theory via an operator algebra approach.

The story starts with the Wigner theorem on transition probability. My study on several preserver problems of function, matrix and operator algebras follow. A typical problem states that how one designs a quantum channel to send a particular group of quantum data to another group of quantum data. Here, quantum data refers to positive density matrices/operators and quantum channels refer to completely positive maps. The talk will end by a briefing of my recent works on divergence preserver problem.