讲座编号:jz-yjsb-2019-y042
讲座问题:Preparation Uncertainty Relations Beyond Heisenberg’s
主 讲 人:Prof. Arun Kumar Pati 教授 Harish-Chandra Research Institute, India
讲座时间:2019年06月20日(星期四)下昼14:00
讲座所在:阜成路东区一号楼241(理学院聚会室)
加入工具:理学院,数学与统计学院全体师生,全校对讲座感兴趣的师生
主理单位:研究生院
承办单位:理学院,数学与统计学院
主讲人简介:
Pati教授在量子信息与量子盘算方面,做出了一系列主要事情,在NATURE, SCIENCE, NATURE INDIA,NATURE ASIA等杂志揭晓论文150余篇,其中在NATURE杂志揭晓文章一篇,在物理顶级杂志Phys. Rev. Lett.揭晓论文11篇。其孝顺包括:
1)未知量子态的不可删除性 NATURE 404, 164 (2000)
2)信息缺失与不可隐藏定理 Phys. Rev. Lett. 98, 080502 (2007),及不可隐藏定理的核磁共振实验验证 Phys. Rev. Lett. 106, 080401 (2011);
3)新的量子相关的可操作怀抱Phys. Rev. Lett. 119 (2017)
4)强量子测禁绝关系Phys. Rev. Lett. 113, 260401 (2014);
NATURE ASIA [Jan 19, 2015];Phys. Rev. Lett. 113, 260401 (2014)
5)混淆量子态在干预中的几何相位Phys. Rev. Lett. 85, 2845 (2000)
(已经被引用500余次)
6)黑洞信息佯谬Phys. Rev. Lett. 98, 080502 (2007)
7)量子纠缠系统的局部幺正变换Phys. Rev. Lett. 91, 090405 (2003)
8)多重量子克隆的态叠加原理Phys. Rev. Lett. 83, 2849 (1999)
9)绝热几何相位及响应函数Phys. Rev. Lett. 80, 650 (1998)
论文 H指数(H-index)30+;i10指数(i10-index)65
多个研究效果已被写入教科书。
Invited to Inaugural event and Panel discussion for the Nobel Prize Series-2017
主讲内容:
Heisenberg-Robertson's uncertainty relation expresses a limitation in the possible preparations of the system by giving a lower bound to the product of the variances of two observables in terms of their commutator. However, it does not capture the concept of incompatible observables because it can be trivial, i.e., the lower bound can be null even for two non-compatible observables. First, two stronger uncertainty relations, relating to the sum of variances, will be presented whose lower bound is guaranteed to be nontrivial whenever the two observables are incompatible on the state of the system. Second, new type of novel state-dependent uncertainty relations for product as well the sum of variances of two incompatible observables will be discussed. These uncertainty relations are shown to be tighter than the Roberson-Schrodinger uncertainty relation. Our results show that quantum world is more uncertain than what we used to think.