摘要
给出了一个量子态是纠缠态的充要条件.在有限维空间上,从特殊的量子态出发,构造出了几类特殊量子态对应的纠缠目击.最后,从算子谱定理入手,构造出了量子态的纠缠目击.
Firstly,a sufficient and necessary condition of a quantum state which is entangled is given. Then, starting from special quantum states, the several special quantum state corresponding to the entanglement witnesses are introduced in the finite dimensional space. Finally, the entanglement witness of quantum states are structured from the spectral theorem of operators.
出处
《纺织高校基础科学学报》
CAS
2013年第1期68-73,共6页
Basic Sciences Journal of Textile Universities
基金
国家自然科学基金资助项目(10871224
11171197)
关键词
量子态
纠缠态
纠缠目击
quantum state
entangled state
entanglement witness
