利用五粒子纠缠态作为量子信道,实现四粒子W态量子信息的分离.发送者Alice发送2、5粒子给Bob,发送3粒子给Charlie.Alice对手中的六个粒子进行von-Neumann测量,把测量结果告诉Charlie和Bob,控制者Charlie对手中的单粒子进行投影测量,再把测量结果告诉Bob,Bob根据手中结果对手中的二粒子进行适当的幺正变换,加两个辅助粒子,再进行适当的量子门操作,就可重建欲发送的四粒子W态,该方案成功概率100％,而且传输粒子较少,易于实现.
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