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2020年9月25日 郭志华教授 线上学术报告
上传时间:2020-09-22 作者: 浏览次数:10

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 onesthat 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,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。20137-20166月在陕西师范大学物理学博士后流动站从事合作研究;20188-20197月于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:2020925日星期五13:30-14:30

报告地点:腾讯会议ID444 969 698 (密码:41346)

学院联系人:张林

 

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