A semidefinite program for distillable entanglement

Details A semidefinite program for distillable entanglement A semidefinite program for distillable entanglement

2000-08-10

arxiv.org/abs/quant-ph/0008047v2

Physics

Quantum Physics

28 pages, LaTeX

Scientific paper

We show that the maximum fidelity obtained by a p.p.t. distillation protocol is given by the solution to a certain semidefinite program. This gives a number of new lower and upper bounds on p.p.t. distillable entanglement (and thus new upper bounds on 2-locally distillable entanglement). In the presence of symmetry, the semidefinite program simplifies considerably, becoming a linear program in the case of isotropic and Werner states. Using these techniques, we determine the p.p.t. distillable entanglement of asymmetric Werner states and ``maximally correlated'' states. We conclude with a discussion of possible applications of semidefinite programming to quantum codes and 1-local distillation.

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