TL;DR该研究提供了一种基于量子渐近等分定理(QAEP)的新的、简化的证明方法,从而获得了约束 von Neumann 熵的数据处理不等式(DPI)的自包含证明。
Abstract
The data processing inequality (DPI) is a fundamental feature of information
theory. Informally it states that you cannot increase the information content
of a quantum system by acting on it with a local physical