All non-classical correlations can be activated into distillable entanglement

摘要

We devise a protocol in which general non-classical multipartite correlationsproduce a physically relevant effect, leading to the creation of bipartiteentanglement. In particular, we show that the relative entropy of quantumness,which measures all non-classical correlations among subsystems of a quantumsystem, is equivalent to and can be operationally interpreted as the minimumdistillable entanglement generated between the system and local ancillae in ourprotocol. We emphasize the key role of state mixedness in maximizingnon-classicality: Mixed entangled states can be arbitrarily more non-classicalthan separable and pure entangled states.