论文标题
真空的操作解释和相同颗粒的过程矩阵
Operational interpretation of the vacuum and process matrices for identical particles
论文作者
论文摘要
这项工作概述了Del Santo和Dakić（DSD）最近引入的单粒子双向通信协议，并使用过程矩阵形式主义对其进行了分析。我们详细说明了代理与真空的相互作用的重要性和操作含义，尤其是其在过程矩阵描述中的作用。我们的分析表明，与真空的相互作用应视为与所有其他相互作用相等的基础上的操作。这提出了以操作方式计算此类操作的问题。通过此分析的激励，我们将过程矩阵形式主义应用于使用第二定量的框架上封闭的Fock空间，以表征具有数量不确定的相同粒子的协议。
This work overviews the single-particle two-way communication protocol recently introduced by del Santo and Dakić (dSD), and analyses it using the process matrix formalism. We give a detailed account of the importance and the operational meaning of the interaction of an agent with the vacuum -- in particular its role in the process matrix description. Our analysis shows that the interaction with the vacuum should be treated as an operation, on equal footing with all other interactions. This raises the issue of counting such operations in an operational manner. Motivated by this analysis, we apply the process matrix formalism to capped Fock spaces using the framework of second quantisation, in order to characterise protocols with an indefinite number of identical particles.
