Locally Optimal Control of Quantum Systems with Strong Feedback
Quantum Physics
2009-11-13 v2
Abstract
For quantum systems with high purity, we find all observables that, when continuously monitored, maximize the instantaneous reduction in the von Neumann entropy. This allows us to obtain all locally optimal feedback protocols with strong feedback, and explicit expressions for the best such protocols for systems of size N <= 4. We also show that for a qutrit the locally optimal protocol is the optimal protocol for a given range of control times, and derive an upper bound on all optimal protocols with strong feedback.
Cite
@article{arxiv.0803.2705,
title = {Locally Optimal Control of Quantum Systems with Strong Feedback},
author = {Alireza Shabani and Kurt Jacobs},
journal= {arXiv preprint arXiv:0803.2705},
year = {2009}
}
Comments
4 pages, Revtex4. v2: published version (some errors corrected)