Optimal Measurement on Noisy Quantum Systems
Quantum Physics
2010-01-15 v3
Abstract
We identify the optimal measurement for obtaining information about the original quantum state after the state to be measured has undergone partial decoherence due to noise. We quantify the information that can be obtained by the measurement in terms of the Fisher information and find its value for the optimal measurement. We apply our results to a quantum control scheme based on a spin-boson model.
Cite
@article{arxiv.0906.4463,
title = {Optimal Measurement on Noisy Quantum Systems},
author = {Yu Watanabe and Takahiro Sagawa and Masahito Ueda},
journal= {arXiv preprint arXiv:0906.4463},
year = {2010}
}
Comments
4 pages, 1 figures