您所在的位置: 首页 / 讲座报告

06月20日14:00 Prof. Arun Kumar Pati:Preparation Uncertainty Relations Beyond

讲座编号:jz-yjsb-2019-y042

讲座题目:Preparation Uncertainty Relations Beyond Heisenberg’s

主 讲 人:Prof. Arun Kumar Pati 教授 Harish-Chandra Research Institute, India

讲座时间:20190620日(星期四)下午1400

讲座地点:阜成路东区一号楼241(理学院会议室)

参加对象: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

主办单位: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计算方面,做出了一系列重要工作,在NATURE, SCIENCE, NATURE INDIANATURE ASIA等杂志发表论文150余篇,其中在NATURE杂志发表文章一篇,在物理顶级杂志Phys. Rev. Lett.发表论文11篇。其贡献包括:

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)新的量子相干的可操作度量Phys. Rev. Lett. 119 (2017)

4)强量子测不准关系Phys. Rev. Lett. 113, 260401 (2014)

NATURE ASIA [Jan 19, 2015]Phys. Rev. Lett. 113, 260401 (2014)

5)混合量子态在干涉中的几何相位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-index30+i10指数(i10-index65

多个研究成果已被写入教科书。

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.