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arXiv · 1701.06177

Super quantum discord for general two qubit X states

Naihuan Jing·Bing Yu
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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.

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Naihuan Jing, Bing Yu. 2017-02-23. Super quantum discord for general two qubit X states. https://doi.org/10.1007/s11128-017-1547-5

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