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Quantifying quantum correlation via quantum coherence

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Abstract

Resource theory is applied to quantify the quantum correlation of a bipartite state and a computable measure is proposed. Since this measure is based on quantum coherence, we present another possible physical meaning for quantum correlation, i.e., the minimum quantum coherence achieved under local unitary transformations. This measure satisfies the basic requirements for quantifying quantum correlation and coincides with concurrence for pure states. Since no optimization is involved in the final definition, this measure is easy to compute irrespective of the Hilbert space dimension of the bipartite state.

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Acknowledgements

This work was supported by the national Natural Science Foundation of China under Grant Nos. 11664018 and 11664017.

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Authors and Affiliations

  1. College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang, 330022, China

    Guang-Yong Zhou, Lin-Jian Huang, Jun-Ya Pan, Li-Yun Hu & Jie-Hui Huang

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  1. Guang-Yong Zhou
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  2. Lin-Jian Huang
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  3. Jun-Ya Pan
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  4. Li-Yun Hu
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  5. Jie-Hui Huang
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Correspondence to Jie-Hui Huang.

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Zhou, GY., Huang, LJ., Pan, JY. et al. Quantifying quantum correlation via quantum coherence. Front. Phys. 13, 130701 (2018). https://doi.org/10.1007/s11467-018-0804-0

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