报告题目： Creating quantum correlation from coherence via incoherent operations
报告人：郭志华 副教授
报告摘要：
Quantum coherence and quantum correlation are two fundamental resources in quantum information and computation. Quantum correlated states in a bipartite system are the same as the states that are coherent with respect to any separable basis, while a coherent state with respect to some given separable basis may not be quantum correlated. In this work, we focus on the question of creating quantum correlation from a coherent state via incoherent quantum operations. We first provide characterizations of incoherent operations, maximally incoherent operations, genuinely incoherent operations and coherence-breaking operations, respectively, and then explicit interrelations among these operations. Moreover, we give the specific forms of states, called super-coherent ones，that can be changed as quantum correlated ones via some genuinely incoherent operation in two-qubit systems. We find that there exist some coherent states that are not super-coherent. Furthermore, we prove that a state can be transformed as a quantum correlated state via an incoherent operation if and only if it is coherent. Lastly, we prove that any maximally entangled state can be changed as an incoherent one via a one-side coherence-breaking operation.
报告人简介：
郭志华，女，副教授，博士，硕士生导师。2013年博士毕业于陕西师范大学数学与信息科学学院。同年留校任教至今。2013年7月-2016年6月在陕西师范大学物理学博士后流动站从事合作研究；2018年8月-2019年7月于中国台湾中山大学应用数学系任客座副教授。研究方向是算子理论与量子信息。近年来以第一作者或通讯作者身份发表SCI学术论文20余篇，目前主持国家自然科学基金面上项目1项、陕西省青年科技新星项目1项、陕西省高层次人才特支计划项目1项。主持完成国家和陕西省基金青年项目、中国博士后基金等4项。入选2017年度陕西省青年科技新星以及2017年陕西省高层次人才特支计划——青年拔尖人才。科学出版社出版专著1部。科研成果获2017年陕西高等学校科学技术奖二等奖。
报告时间：2020年9月25日星期五13:30-14:30
报告地点：腾讯会议ID：444 969 698 (密码：41346)
学院联系人：张林