As each quantum bit contains two probability amplitudes, each particle occupies two positions in space.Hence, the process of searching is accelerated. 因每个量子位有两个概率幅，故每个粒子同时占据空间两个位置，在粒子数目相同时，能加速粒子的搜索进程。
Any alternative of quantum mechanics must be able to explain two-slit experiments, therefore it must contain passage conditions or probability amplitudes. 任何替代量子力学解释量子现象的理论都得说明双缝衍射实验，这就必须引进通道条件或引进概率幅。
Whereas the absolute value of the probability amplitude encodes information about probabilities, its phase encodes information about the interference between quantum states. 但是概率振幅的绝对值编码了概率信息，其相位编码了量子态之间的干涉。
