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Unified scheme for correlations using linear relative entropy
- Source :
- Physics Letters 378 (2014) 3501
- Publication Year :
- 2014
-
Abstract
- A linearized variant of relative entropy is used to quantify in a unified scheme the different kinds of correlations in a bipartite quantum system. As illustration, we consider a two-qubit state with parity and exchange symmetries for which we determine the total, classical and quantum correlations. We also give the explicit expressions of its closest product state, closest classical state and the corresponding closest product state. A closed additive relation, involving the various correlations quantified by linear relative entropy, is derived.<br />Comment: 20 pages
- Subjects :
- Quantum Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Physics Letters 378 (2014) 3501
- Publication Type :
- Report
- Accession number :
- edsarx.1412.1072
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.physleta.2014.10.012