| 発行・発表の年月 | 2023/01/01 |
|---|---|
| 形態種別 | 【論文】研究論文（学術雑誌）＜査読あり＞ |
| 査読 | 査読あり |
| 標題 | Measurement disturbance and conservation laws in quantum mechanics |
| 執筆形態 | 【共著】共著 |
| 掲載誌名 | Quantum |
| 巻・号・頁 | 7,1033-1033 |
| 著者・共著者 | M. Hamed Mohammady,Takayuki Miyadera,Leon Loveridge |
| 概要 | Measurement error and disturbance, in the presence of conservation laws, are
analysed in general operational terms. We provide novel quantitative bounds demonstrating necessary conditions under which accurate or non-disturbing measurements can be achieved, highlighting an interesting interplay between incompatibility, unsharpness, and coherence. From here we obtain a substantial generalisation of the Wigner-Araki-Yanase (WAY) theorem. Our findings are further refined through the analysis of the fixed-point set of the measurement channel, some extra structure of which is characterised here for the first time. |
| DOI | 10.22331/q-2023-06-05-1033 |
| ISSNコード | /2521-327X |
| arXiv ID | arXiv:2110.11705 |
| DBLP ID | journals/quantum/MohammadyML23 |
| PermalinkURL | http://arxiv.org/abs/2110.11705v3 |
| researchmap用URL | http://arxiv.org/pdf/2110.11705v3 |