量子计算来源于量子相干和量子纠缠的特性,但是这两个性质都很脆弱和易于出错,很容易被称为消相干的过程破坏掉,因此如何克服消相干的影响已成为实现量子计算机的一个关键.利用非跃迁轨迹和Berry以及AA几何相位公式,计算了在绝热和非绝热情况下,分别由单模和双模消相干量子场所产生的自旋为1/2系统的几何相位.利用量子跃迁方法,当考虑绝热和非绝热演化时,发现对于非跃迁轨道,其相位修正值是不同的.最后我们从基本原理和量子计算的观点讨论了其结果的意义.
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