Super quantum discord for general two qubit X states
arXiv:1701.06177 · doi:10.1007/s11128-017-1547-5
Abstract
The exact solutions of the super quantum discord are derived for general two qubit X states in terms of a one-variable function. Several exact solutions of the super quantum discord are given for the general X-state over nontrivial regions of a seven dimensional manifold. It is shown that the super quantum discord of the X state may increase or decreases under the phase damping channel.
arXiv comment16 pages, 3 figures
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