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囚禁离子多体纠缠态的简单制备方案

, PP. 420-428

Keywords: 量子光学,离了阱,GHZ态,W态,簇态

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Abstract:

提出了三种制备冷离子多体纠缠态的简单方案。第一个方案是关于GHZ态的制备,其只需要利用激光对所有离子进行一次集体驱动。第二个方案是制备对称的W态,W态的产生需要两步操作才能完成。第三个方案是研究簇态的制备,并讨论了利用两个小簇态合成一个大簇态的方法和过程,这种合成法可以增加大簇态的产生速度,从而可以减低实验中因退相干而产生的失真。以上三个方案都是利用振动态处于基态的多个离子与激光场的大失谐相互作用来实现的。与以前的方案相比,这些方案有以下四个优点不需要离子的振动模来存储和传递信息;不需要单个地驱动这些离子;不受激光场的相位涨落的影响;需要相对少的操作步骤。

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