Information-disturbance tradeoff for spin coherent state estimation
量子物理
2007-05-23 v2
摘要
We show how to quantify the optimal tradeoff between the amount of information retrieved by a quantum measurement in estimating an unknown spin coherent state and the disturbance on the state itself, and how to derive the corresponding minimum-disturbing measurement.
引用
@article{arxiv.quant-ph/0610246,
title = {Information-disturbance tradeoff for spin coherent state estimation},
author = {Massimiliano F. Sacchi},
journal= {arXiv preprint arXiv:quant-ph/0610246},
year = {2007}
}
备注
6 pages, 3 figures; improved introduction, simplified notation, and new references. To appear on Phys. Rev. A