Detection of entanglement with polarized photons: Experimental realization of an entanglement witness
Detection of entanglement with polarized photons: Experimental realization of an entanglement witness
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DOI：
10.1103/physrevlett.91.227901
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发表时间：
2003-11-28
影响因子：
8.6
通讯作者：
Macchiavello, C
中科院分区：
文献类型：
--
作者：
Barbieri, M;De Martini, F;Macchiavello, C
我们报告的第一个实验实现的纠缠证人，一种方法来检测纠缠与几个本地测量。目前的演示已经进行了偏振光子在维尔纳状态，一个著名的家庭的混合状态，可以是可分离的或不可分离的。Werner态是由一种新颖的高亮度二体纠缠态源产生的，通过这种光源可以很容易地调节态的混合度。
We report on the first experimental realization of an entanglement witness, a method to detect entanglement with few local measurements. The present demonstration has been performed with polarized photons in Werner states, a well-known family of mixed states that can be either separable or nonseparable. The Werner states are generated by a novel high brilliance source of bipartite entangled states by which the state mixedness can be easily adjusted.