2015/09/14 by Shao-xiong Wu, Yang Zhang, Chang-shui Yu +1 · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1088/1751-8113/48/4/045301
published as J. Phys. A: Gen. Maths. 48,045301 (2015) · 6 pages 4 figures
arxiv created 2015/09/14 · arxiv updated 2015/09/23
The generic bound of quantum speed limit time (the minimal evolution time) for a qubit system interacting with structural environment is investigated. We define a new bound for the quantum speed limit. 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.