Hits:

Indexed by:期刊论文

Date of Publication:2015-01-30

Journal:JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL

Included Journals:SCIE

Volume:48

Issue:4

ISSN No.: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.