Measure of classical correlation in a two-qubit state

Jie Hui Huang; Shi Yao ZHU

doi:10.1088/1751-8113/41/12/125301

Measure of classical correlation in a two-qubit state

Jie Hui Huang^*, Shi Yao ZHU

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Journal article › peer-review

3 Citations (Scopus)

Abstract

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 language	English
Article number	125301
Journal	Journal of Physics A: Mathematical and Theoretical
Volume	41
Issue number	12
DOIs	https://doi.org/10.1088/1751-8113/41/12/125301
Publication status	Published - 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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10.1088/1751-8113/41/12/125301

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AB - 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.

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Measure of classical correlation in a two-qubit state

Abstract

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