On two-distillable Werner states

Details On two-distillable Werner states On two-distillable Werner states

2010-03-23

arxiv.org/abs/1003.4337v1

Physics

Quantum Physics

10 pages

Scientific paper

We consider bipartite mixed states in a d x d quantum system with d at least 3. We say that such a state is PPT if its partial transpose is positive semidefinite, and otherwise that it is NPT. The well-known Werner states are partitioned into three types: a) the separable states (same as the PPT states), b) the 1-distillable states (necessarily NPT), and c) the NPT states which are not 1-distillable. We give several different formulations and provide further evidence for validity of the conjecture that the type c) Werner states are not 2-distillable.

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