A Schmidt number criterion based on trace norms of GSIC-POVM correlation matrices is derived, recovering optimal visibility for isotropic states and proving entangled Werner states have Schmidt number 2.
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Schmidt number criterion via general symmetric informationally complete measurements
A Schmidt number criterion based on trace norms of GSIC-POVM correlation matrices is derived, recovering optimal visibility for isotropic states and proving entangled Werner states have Schmidt number 2.