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A Decomposition of Separable Werner States

R. G. Unanyan·H. Kampermann·D. Bruss
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Abstract

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.

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R. G. Unanyan, H. Kampermann, D. Bruss. 2007-03-26. A Decomposition of Separable Werner States. https://doi.org/10.1088/1751-8113/40/24/f07

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