量子测量中的噪声与扰动:一种信息论方法
量子物理
2014-07-29 v3
摘要
我们引入了量子测量中噪声和扰动的信息论定义,并证明了一个与状态无关的噪声 - 扰动权衡关系,这些量在任何可想象的设置中都必须满足该关系。与以往的方法相反,我们定义的信息论量在结果重标记下是不变的,并允许使用量子或经典操作来“纠正”扰动。我们还展示了我们的界限如何暗示均方偏差的强权衡关系。
引用
@article{arxiv.1310.6603,
title = {Noise and disturbance in quantum measurements: an information-theoretic approach},
author = {Francesco Buscemi and Michael J. W. Hall and Masanao Ozawa and Mark M. Wilde},
journal= {arXiv preprint arXiv:1310.6603},
year = {2014}
}
备注
v3: to appear on PRL (some issues fixed, supplemental material expanded). v2: replaced with submitted version; 5 two-column pages + 6 one-column pages + 3 figures; one issue corrected and few references added. v1: 17 pages, 3 figures