Detecting some three-qubit MUB diagonal entangled states via nonlinear optimal entanglement witnesses

  title={Detecting some three-qubit MUB diagonal entangled states via nonlinear optimal entanglement witnesses},
  author={M. Jafarizadeh and M. Mahdian and A. Heshmati and K. Aghayar},
  journal={The European Physical Journal D},
The three qubits mutually unbiased bases (MUB) diagonal density matrices with maximally entanglement in Greenberger-Horne-Zeilinger (GHZ) basis are studied. These are a natural generalization of Bell-state diagonal density matrices. The linearity of positive partial transpose (PPT) conditions allows one to specify completely PPT states or feasible region (FR) which form a polygon, where the projection of the feasible region to some two dimensional planes has lead to better visualization. To… Expand
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