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

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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.",

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AU - Zhu, Shi Yao

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N2 - 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.

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.

UR - https://www.scopus.com/pages/publications/41149132968

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DO - 10.1088/1751-8113/41/12/125301

M3 - Journal article

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VL - 41

JO - Journal of Physics A: Mathematical and Theoretical

JF - Journal of Physics A: Mathematical and Theoretical

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Measure of classical correlation in a two-qubit state

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