Preprint 66/2013

Unifying Treatment of Discord via Relative Entropy

Lin Zhang, Shao-Ming Fei, and Jun Zhu

Contact the author: Please use for correspondence this email.
Submission date: 17. Jul. 2013
Pages: 15
published in: International journal of theoretical physics, 52 (2013) 6, p. 1946-1955 
DOI number (of the published article): 10.1007/s10773-012-1361-x
Download full preprint: PDF (100 kB)

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.

02.07.2022, 02:16