在回顾量子系统中有关纠缠探测的各种方法和纠缠度不同定义的基础上,总结了探测两体或多体纠缠的几种分离判据;分析了它们与正映射之间及其相互之间的关系;重点分析了纠缠目击者这种特殊的分离判据,包括它的定义以及构造方法,并且从实验观点分析了它的应用.在已提出的公理化假设的纠缠测量思想基础上,讨论了理论上各种两体纠缠度和多体纠缠度的定义以及各种纠缠度在实验中的估计问题.最后对各种非线性分离判据进行了分析.
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