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个人信息Personal Information
副教授
博士生导师
硕士生导师
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：光学工程. 光学. 测试计量技术及仪器
办公地点：物理系326房间
联系方式：yangzhang@dlut.edu.cn
电子邮箱：yangzhang@dlut.edu.cn
The initial-state dependence of the quantum speed limit
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论文类型：期刊论文
发表时间：2015-01-30
发表刊物：JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
收录刊物：SCIE
卷号：48
期号：4
ISSN号：1751-8113
关键字：quantum speed limit bound; Margolus-Levitin bound; open system
摘要：The generic bound of quantum speed limit time (the minimal evolution time) for a qubit system interacting with a structural environment is investigated. We define a new bound for the quantum speed limits. It is shown that the non-Markovianity and the population of the excited state can fail to signal the quantum evolution acceleration, but the initial-state dependence is an important factor. In particular, we find that different quantum speed limits could produce contradictory predictions on the quantum evolution acceleration.