Extended Techniques for Feedback Control of A Single Qubit
Quantum Physics
2015-06-16 v1
Abstract
The protection of quantum states is challenging for non-orthogonal states especially in the presence of noises. The recent research breakthrough shows that this difficulty can be overcome by feedback control with weak measurements. However, the state-protection schemes proposed recently work optimally only for special quantum states. In this paper, {by applying different weak measurements, we extend the idea of the state-protection scheme to protect general states.} We calculate numerically the optimal parameters and discuss the performance of the scheme. Comparison between this extended scheme and the earlier scheme is also presented.
Cite
@article{arxiv.1308.2008,
title = {Extended Techniques for Feedback Control of A Single Qubit},
author = {Y. Yang and X. Y. Zhang and J. Ma and X. X. Yi},
journal= {arXiv preprint arXiv:1308.2008},
year = {2015}
}