Information, disturbance and Hamiltonian quantum feedback control
Quantum Physics
2009-11-06 v1
Abstract
We consider separating the problem of designing Hamiltonian quantum feedback control algorithms into a measurement (estimation) strategy and a feedback (control) strategy, and consider optimizing desirable properties of each under the minimal constraint that the available strength of both is limited. This motivates concepts of information extraction and disturbance which are distinct from those usually considered in quantum information theory. Using these concepts we identify an information trade-off in quantum feedback control.
Cite
@article{arxiv.quant-ph/0006013,
title = {Information, disturbance and Hamiltonian quantum feedback control},
author = {Andrew C. Doherty and Kurt Jacobs and Gerard Jungman},
journal= {arXiv preprint arXiv:quant-ph/0006013},
year = {2009}
}
Comments
13 pages, multicol Revtex, 2 eps figures