报告问题 (Title)：Quantum information theory and preserver problems （量子讯息论与坚持问题）

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

报告所在 (Place)：校本部F309聚会室

约请人(Inviter)：王卿文 教授

主理部分：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.