Measure of classical correlation in a two-qubit state

Jie Hui Huang*, Shi Yao ZHU

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

3 Citations (Scopus)


We suggest a measure of classical correlation in a two-qubit state, which is computable and implementable in experiments. As examples, we investigate the classical and quantum correlations in the Werner states and in a group of particular states mixed with three parts: an entangled, a separable and a product one. It is shown that the quantum correlation in a two-qubit state cannot exceed the classical correlation in the same state.

Original languageEnglish
Article number125301
JournalJournal of Physics A: Mathematical and Theoretical
Issue number12
Publication statusPublished - 28 Mar 2008

Scopus Subject Areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Modelling and Simulation
  • Mathematical Physics
  • Physics and Astronomy(all)


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