All non-classical correlations can be activated into distillable entanglement

Abstract

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

4+4 pages, 1 figure. Published version

References in corpus (13)

• Quantum discord and the power of one qubit
• On the quantum, classical and total amount of correlations in a quantum state
• No-local-broadcasting theorem for quantum correlations
• Aspects of generic entanglement
• Randomizing quantum states: Constructions and applications
• Interpreting quantum discord through quantum state merging
• Operational interpretations of quantum discord
• A computable measure of nonclassicality for light
• Linking Quantum Discord to Entanglement in a Measurement
• All entangled states are useful for channel discrimination
• Broadcast copies reveal the quantumness of correlations
• Finding a maximally correlated state - Simultaneous Schmidt decomposition of bipartite pure states
• Nonclassical correlation in a multipartite quantum system: two measures and evaluation