Werner derivatives are a special kind of mixing states that originate from the Werner state due to unitary evolutions. In this paper, quantum correlation (QC) swapping between two Werner derivatives is studied. Quantum discord (Ollivier and Zurek 2001 Phys. Rev. Lett. 88 017901) is employed as the QC quantifier to characterize and quantify all QCs inhabited in the states which emerge during the swapping process. All concerned QCs are analytically or numerically worked out and their behaviors and properties such as monotony features and thresholds are concretely analyzed. Particularly, the QC properties of the four different final states corresponding to four different Bell states are revealed, compared and discussed. More importantly, it is found that, long-distance shared QCs can be generated from two short-distance ones via Bell-state measures in the middle nodes of a quantum network.

维尔纳导数是一种特殊的混合态，由于幺正演化起源于维尔纳态。在本文中，研究了两个 Werner 导数之间的量子相关 (QC) 交换。量子不和谐（Ollivier 和 Zurek 2001 Phys. Rev. Lett. 88017901) 被用作 QC 量化器来表征和量化所有在交换过程中出现的状态中居住的 QC。所有相关的 QC 都被分析或数值计算出来，并具体分析了它们的行为和属性，如单调特征和阈值。特别是，揭示、比较和讨论了对应于四种不同贝尔状态的四种不同最终状态的 QC 特性。更重要的是，发现可以通过量子网络中间节点的贝尔状态测量从两个短距离的 QC 生成长距离共享 QC。