On the complexity of controlling quantum many-body dynamics
Quantum Physics
2015-06-12 v2 Statistical Mechanics
Abstract
We demonstrate that arbitrary time evolutions of many-body quantum systems can be reversed even in cases when only part of the Hamiltonian can be controlled. The reversed dynamics obtained via optimal control --contrary to standard time-reversal procedures-- is extremely robust to external sources of noise. We provide a lower bound on the control complexity of a many-body quantum dynamics in terms of the dimension of the manifold supporting it, elucidating the role played by integrability in this context.
Keywords
Cite
@article{arxiv.1301.6015,
title = {On the complexity of controlling quantum many-body dynamics},
author = {T. Caneva and A. Silva and R. Fazio and S. Lloyd and T. Calarco and S. Montangero},
journal= {arXiv preprint arXiv:1301.6015},
year = {2015}
}
Comments
4.5 pages, 5 figures