A Decomposition of Separable Werner States

Unanyan, R. G.; Kampermann, H.; Bruss, D.

A Decomposition of Separable Werner States

Authors

Unanyan, R. G.

Kampermann, H.

Bruss, D.

Description

We derive an integral convex combination of product states for a range of separable Werner states. Our method consists of expanding the sought-after local density operators in terms of Wigner operators. For dimension d=2, our decomposition holds for the whole separable range of Werner states, while for d>2 it is valid for a subset of separable Werner states. We illustrate the general method with the explicit examples d=2 and d=3.
7 pages, 1 figures