We know that in classical information theory the relation between different entropies can be depicted by Venn Diagram as given below.
Can we create such Venn-diagrams for the quantum information theory case, where we consider Von-Neumann Entropy? I feel such Venn diagrams are not possible because in Quantum Information, some entropies can be negative. What can we do in such a scenario. Is there any research being performed in this direction, to create a geometrical picture of quantum information theory?