报告题目：Uncertainty Regions of Observables and State-Independent Uncertainty Relations
报告人：杭州电子科技大学理学院张林
报告时间：2021年11月3日14:00-15:00
报告地点：A4-216
报告摘要：The optimal state-independent lower bounds for the sum of variances or deviations of observables are of significance for the growing number of experiments that reach the uncertainty limited regime. We present a framework for computing the tight uncertainty relations of variance or deviation via determining the uncertainty regions, which are formed by the tuples of two or more of quantum observables in random quantum states induced from the uniform Haar measure on the purified states. From the analytical formulae of these uncertainty regions, we present state-independent uncertainty inequalities satisfied by the sum of variances or deviations of two, three and arbitrary many observables, from which experimentally friend entanglement detection criteria are derived for bipartite and tripartite systems.
报告人简介：
张林，2012年毕业于浙江大学基础数学专业，获得理学博士学位，2012年开始至今在杭州电子科技大学理学院工作。目前主要从事量子信息理论的数学基础研究。2019年6月-2020年6月期间访问德国马克斯普朗克数学研究所(莱比锡)，主题是随机联合测量和非局域性、不确定性关系。近年来以第一作者身份发表SCI学术论文40余篇，目前主持国家自然科学基金面上项目1项。个人主页http://mypage.hdu.edu.cn/lz
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