Stabilizing quantum dynamics through coupling to a quantized environment
Quantum Physics
2017-11-22 v1
Abstract
We show that introducing a small uncertainty in the parameters of quantum systems can make the dynamics of these systems robust against perturbations. Concretely, for the case where a system is subject to perturbations due to an environment, we derive a lower bound on the fidelity decay, which increases with increasing uncertainty in the state of the environment. Remarkably, this robustness in fidelity can be achieved even in fragile chaotic systems. We show that non-Markovianity is necessary for attaining robustness in the fidelity.
Cite
@article{arxiv.1711.07906,
title = {Stabilizing quantum dynamics through coupling to a quantized environment},
author = {Meenu Kumari and Eduardo Martin-Martinez and Achim Kempf and Shohini Ghose},
journal= {arXiv preprint arXiv:1711.07906},
year = {2017}
}
Comments
5 pages, 2 figures