Geometric entanglement witnesses and bound entanglement
Reinhold A. Bertlmann, Philipp Krammer · Physical Review A · 2008
We study entanglement witnesses that can be constructed with regard to the geometrical structure of the Hilbert-Schmidt space, i.e., we present how to use these witnesses in the context of quantifying entanglement and the detection of bound entangled states. We give examples for a particular three-parameter family of states that are part of the magic simplex of two-qutrit states.