Extreme points of the set of density matrices with positive partial transpose

Physics – Quantum Physics

Scientific paper

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4 pages, 2 figures

Scientific paper

10.1103/PhysRevA.76.034304

We present a necessary and sufficient condition for a finite dimensional
density matrix to be an extreme point of the convex set of density matrices
with positive partial transpose with respect to a subsystem. We also give an
algorithm for finding such extreme points and illustrate this by some examples.

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