Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2015-01-30

Journal: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL

Included Journals: SCIE

Volume: 48

Issue: 4

ISSN: 1751-8113

Key Words: quantum speed limit bound; Margolus-Levitin bound; open system

Abstract: 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.