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报告题目：Quasi-Fine-Grained Uncertainty Relations

报 告 人：肖运龙 博士（加拿大卡尔加里大学）

报告时间：2018年7月31日（星期二）上午10:00-11:00

报告地点：4号楼4318室

邀 请 人：刘明 博士

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数学学院

2018年7月27日

报告摘要：

  The uncertainty principle, a jewel at the heart of quantum theory,has been expressed by completely different forms, such as universal uncertainty relations,an uncertainty principle in the presence of quantum memory and a fine-grained uncertainty relation.We unify these uncertainty relations based on a special formalization of probability relations,namely introducing quasi-fine-grained uncertainty relations (QFGURs), which combine different measurements performed on spacelike-separated systems.Our generalized probability relations determine whether a quantum measurement exhibits typical quantum correlations and reveal a fundamental connection between basic elements of quantum theory,specifically, uncertainty measures,combined outcomes for different measurements,quantum memory, entanglement and Einstein-Podolsky-Rosen steering. Furthermore,we derive a universal form for entanglement and steering inequalities explicitly by applying our QFGURs.