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
Renyi entropy uncertainty relation for successive projective measurements
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论文类型:期刊论文
发表时间:2015-06-01
发表刊物:QUANTUM INFORMATION PROCESSING
收录刊物:SCIE、EI、Scopus
卷号:14
期号:6
页面范围:2239-2253
ISSN号:1570-0755
关键字:Renyi entropy; Uncertainty relation; Successive projective measurements
摘要:We investigate the uncertainty principle for two successive projective measurements in terms of R,nyi entropy based on a single quantum system. Our results cover a large family of the entropy (including the Shannon entropy) uncertainty relations with a lower optimal bound. We compare our relation with other formulations of the uncertainty principle in two-spin observables measured on a pure quantum state of qubit. It is shown that the low bound of our uncertainty relation has better tightness.