个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:物理学院党委书记
其他任职:无
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:物理学院
学科:理论物理
办公地点:313
Quantum coherence via skew information and its polygamy
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论文类型:期刊论文
发表时间:2017-04-25
发表刊物:PHYSICAL REVIEW A
收录刊物:SCIE、EI、Scopus
卷号:95
期号:4
ISSN号:2469-9926
摘要:Quantifying coherence is a key task in both quantum-mechanical theory and practical applications. Here, a reliable quantum coherence measure is presented by utilizing the quantum skew information of the state of interest subject to a certain broken observable. This coherence measure is proven to fulfill all the criteria (especially the strong monotonicity) recently introduced in the resource theories of quantum coherence. The coherence measure has an analytic expression and an obvious operational meaning related to quantum metrology. In terms of this coherence measure, the distribution of the quantum coherence, i.e., how the quantum coherence is distributed among the multiple parties, is studied and a corresponding polygamy relation is proposed. As a further application, it is found that the coherencemeasure forms the natural upper bounds for quantum correlations prepared by incoherent operations. The experimental measurements of our coherence measure as well as the relative-entropy coherence and l(p)-norm coherence are studied finally.