Wednesday, June 20, 2012

1206.4109 (Lin Zhang et al.)

Unifying Treatment of Discord via Relative Entropy    [PDF]

Lin Zhang, Shao-Ming Fei, Jun Zhu
We study the monotonicity inequality of relative entropy under completely positive linear maps. A new form of zero-discord state via Petz's monotonicity condition on relative entropy with equality has been derived systematically. A generalization of symmetric zero-discord states is presented and the related physical implications are discussed.
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