中文摘要：

量子纠缠是量子信息处理过程中的重要资源，也是量子力学与经典力学本质区别的一个重要特征．最近随着量子信息理论的不断发展，人们发现可分态中也可以存在非经典的量子关联，量子纠缠只是量子关联的一部分．而且这种非纠缠的量子关联可能在一些量子信息处理过程中起到重要的作用．文章介绍了量子关联最近所取得的一些研究进展，特别是量子关联在各种消相干环境下的演化规律等．

英文摘要：

Quantum entanglement is fundamental in quantum physics both for its essential role in understanding the nonlocality of quantum mechanics and its practical application in quantum information processing. Recently, with the development of quantum information theory, nonclassical correlation has been found to exist even in separated states. The quantum correlation of quantum states includes entanglement and other kinds of nonclassical correlation. Moreover, such kinds of non-entangled quantum correlation may also play important roles in certain quantum information processes. We review recent progress in this field, particularly the dynamics of quantum correlation in different kinds of decoherence environments.