All non-classical correlations can be activated into distillable entanglement

Details All non-classical correlations can be activated into distillable entanglement All non-classical correlations can be activated into distillable entanglement

2011-03-21

arxiv.org/abs/1103.4032v2

Phys. Rev. Lett. 106, 220403 (2011)

Physics

Quantum Physics

4+4 pages, 1 figure. Published version

Scientific paper

10.1103/PhysRevLett.106.220403

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.

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