于长水

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

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Coherence measure in terms of the Tsallis relative alpha entropy

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论文类型:期刊论文

发表时间:2018-01-10

发表刊物:SCIENTIFIC REPORTS

收录刊物:SCIE、PubMed、Scopus

卷号:8

期号:1

页面范围:299

ISSN号:2045-2322

摘要:Coherence is the most fundamental quantum feature of the nonclassical systems. The understanding of coherence within the resource theory has been attracting increasing interest among which the quantification of coherence is an essential ingredient. A satisfactory measure should meet certain standard criteria. It seems that the most crucial criterion should be the strong monotonicity, that is, average coherence doesn't increase under the (sub-selective) incoherent operations. Recently, the Tsallis relative alpha entropy has been tried to quantify the coherence. But it was shown to violate the strong monotonicity, even though it can unambiguously distinguish the coherent and the incoherent states with the monotonicity. Here we establish a family of coherence quantifiers which are closely related to the Tsallis relative alpha entropy. It proves that this family of quantifiers satisfy all the standard criteria and particularly cover several typical coherence measures.