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We have decided to discontinue the publication of preprints on our preprint server end of 2024. The publication culture within mathematics has changed so much due to the rise of repositories such as ArXiV (www.arxiv.org) that we are encouraging all institute members to make their preprints available there. An institute's repository in its previous form is, therefore, unnecessary. The preprints published to date will remain available here, but we will not add any new preprints here.
Analytical Expression of Quantum Discord for Rank-2 Two-qubit States
Xue-Na Zhu, Xianqing Li-Jost and Shao-Ming FeiAbstract
Quantum correlations characterized by quantum entanglement and quantum discord play important roles in many quantum information processing.
We study the relations among the entanglement of formation, concurrence, tangle, linear entropy based classical correlation and von Neumann entropy based classical correlation . We present analytical formulae of linear entropy based classical correlation for arbitrary
From the von Neumann entropy based classical correlation, we derive an explicit formula of quantum discord for arbitrary rank-2 two-qubit quantum states.
- Received:
- 20.08.18
- Published:
- 28.08.18