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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、Scopus

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.