第一类测量、非破坏测量与守恒定律
量子物理
2007-05-23 v3
摘要
对第一类(FK)测量与量子非破坏(QND)测量作了一般性讨论。导出了这些测量的一般条件，包括最一般的条件(称为弱条件)、中间条件与最强条件。弱条件表明，通过允许装置具有有限响应范围，我们可实现各类广泛观测量的 FK 或 QND 测量装置。最近提出的利用电子干涉仪的 QND 光探测器即是此类装置的一例。
引用
@article{arxiv.quant-ph/9804026,
title = {First-kind measurements, non-demolition measurements, and conservation laws},
author = {Akira Shimizu and Kazuko Fujita},
journal= {arXiv preprint arXiv:quant-ph/9804026},
year = {2007}
}
备注
7 pages including 1 figure. A typo (of the book version and the previous quant-ph version) in Eq. (9) has been fixed. Figure 1 has been included in the manuscript. Style parameters have been adjusted to fit both the A4 and US letter papers