提出利用纠缠交换的方法来实现两原子和三原子部分纠缠态的纯化,并将该方法推广到多原子部分纠缠态的情况.结果,对于不同原子数的部分纠缠态,却得到了相同的从部分纠缠提取为最大纠缠态的概率2|b|2,此概率为原子纠缠态中四个系数的模方最小者的两倍.
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