论文标题
量子参考帧中的破坏性和信息编码
Decoherence and information encoding in quantum reference frames
论文作者
论文摘要
参考帧在物理学中特别重要。它们通常被认为是理想化的实体。但是，在大多数情况下，例如在实验室中，物理过程在物理系统构成的参考帧中描述。随着新的技术发展使证明复杂对象的量子特性成为可能，出现了一个有趣的概念问题：一个人可以使用量子系统的状态来定义参考帧吗？最近，[F。]引入了这样的框架。 Giacomini，E。Castro-Ruiz和č。布鲁克纳（Nat Commun）10，494（2019）]。其后果之一是量子相关性取决于观察者参考框架的物理状态。这项工作的目的是检查这种现象的动态方面，并表明在复合系统的演变过程中建立的相关性也是如此。因此，反矫正过程也是相对的：对于某些观察者而言，子系统的进化减少是统一的，而对于其他观察者而言。我还讨论了这种结果对破坏理论的现代发展的含义：量子达尔文主义和频谱广播结构。
Reference frames are of special importance in physics. They are usually considered to be idealized entities. However, in most situations, e.g. in laboratories, physical processes are described within reference frames constituted by physical systems. As new technological developments make it possible to demonstrate quantum properties of complex objects an interesting conceptual problem arises: Could one use states of quantum systems to define reference frames? Recently such a framework has been introduced in [F. Giacomini, E. Castro-Ruiz, and Č. Brukner, Nat Commun 10, 494 (2019)]. One of its consequences is the fact that quantum correlations depend on a physical state of an observers reference frame. The aim of this work is to examine the dynamical aspect of this phenomena and show that the same is true for correlations established during an evolution of a composite systems. Therefore, decoherence process is also relative: For some observers the reduced evolution of subsystems is unitary, whereas for others not. I also discuss implications of this results for modern developments of decoherence theory: Quantum Darwinism and Spectrum Broadcast Structures.
