Print ISSN:1674-1056  |  Online ISSN:2058-3834  |  CN:11-5639/O4
  • Cite this article:

    Qing-Yun Zhou, Xiao-Gang Fan, Fa Zhao, Dong Wang, Liu Ye. Transformation relation between coherence and entanglement for two-qubit statesJ. Chin. Phys. B, 2023, 32(1): 010304.
    Qing-Yun Zhou, Xiao-Gang Fan, Fa Zhao, Dong Wang, Liu Ye. Transformation relation between coherence and entanglement for two-qubit statesJ. Chin. Phys. B, 2023, 32(1): 010304.
  • Transformation relation between coherence and entanglement for two-qubit states

    • Entanglement and coherence are two important resources in quantum information theory. A question naturally arises: Is there some connection between them? We prove that the entanglement of formation and the first-order coherence of two-qubit states satisfy an inequality relation. Two-qubit pure state reaches the upper bound of this inequality. A large number of randomly generated states are used to intuitively verify the complementarity between the entanglement of formation and the first-order coherence. We give the maximum accessible coherence of two-qubit states. Our research results will provide a reliable theoretical basis for conversion of the two quantum resources.
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