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远程制备任意双粒子态

, PP. 414-419

Keywords: 量子光学,确定性远程态制备,GHZ态

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Abstract:

王和闫设计出利用两步方法确定性地实现远程制备单粒子态,受到这个思想的启发,我们研究了任意形式双粒子态的远程制备。在我们的方案中,两个非最大纠缠GHZ态用作量子通道,制备者Alice将已知态的全部信息分割为两部分,一部分为实系数部分,另一部分为相因子部分。制备者Alice执行两次投影测量并将测量结果用4比特经典信息告诉Bob,远方接收者Bob可以通过合适的幺正变换以概率4Ιβγ2Ι成功地获得目标态,此成功概率比刘的方案高,这也是本方案的优点所在,因为在刘的方案中只有二粒子实系数态或赤道态的远程制备才能达到这个概率值。

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