The one-way unlocalizable quantum discord

Details The one-way unlocalizable quantum discord The one-way unlocalizable quantum discord

2012-01-19

arxiv.org/abs/1201.3979v2

Physics

Quantum Physics

6 pages, 3 figures. Minor corrections, references added

Scientific paper

In this paper, we present the concept of the one-way unlocalizable quantum discord and investigate its properties. We provide a polygamy inequality for it in tripartite pure quantum system of arbitrary dimension. Several tradeoff relations between the one-way unlocalizable quantum discord and other correlations are given. If the von Neumann measurement is on a part of the system, we give two expressions of the one-way unlocalizable quantum discord in terms of partial distillable entanglement and quantum disturbance. Finally, we also provide a lower bound for bipartite shareability of quantum correlation beyond entanglement in a tripartite system.

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