The initial-state dependence of quantum speed limit
Quantum Physics
2015-09-23 v1
Abstract
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.
Keywords
Cite
@article{arxiv.1509.03958,
title = {The initial-state dependence of quantum speed limit},
author = {Shao-xiong Wu and Yang Zhang and Chang-shui Yu and He-shan Song},
journal= {arXiv preprint arXiv:1509.03958},
year = {2015}
}
Comments
6 pages 4 figures