量子计算是近年来新出现的计算技术,具有非常好的发展前景.任何量子计算都能够被简化到一个门序列,而量子计算要利用某种物理体系来实现.介绍了一种通过腔QED实现高效的两原子的受控位相门的方案.此方案中,原子跃迁与腔模处于大失谐,因此原子自发辐射的影响得到了极大的抑制,从而提高了成功几率.而保真度取决于α、β、γ、δ几个常数的取值,数值计算结果表明我们的方案具有比较高的保真度,其保真度的平均值F=0.982318.该方案有一定的实验可行性,有望得到实验上的验证.
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