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Classification of mixed high-dimensional multiparticle systems

Koji Nagata
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Abstract

We present an inequality that classifies mixed multipartite systems of an arbitrary dimension with respect to separability and positivity of partial transpose properties. This inequality gives a way to experimentally classify the observed state of multipartite systems of an arbitrary dimension. The inequality also implies that a sufficient condition for a density operator to have no positive partial transpose with respect to any subsystem is that the fidelity to a generalized Greenberger-Horne-Zeilinger state {[A. Cabello, Phys. Rev. A {\bf 63}, 022104 (2001)]} is larger than 1/2 for mixed multipartite systems of an arbitrary dimension.

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Koji Nagata. 2005-10-31. Classification of mixed high-dimensional multiparticle systems. https://doi.org/10.1103/physreva.66.064101

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