量子电路是实现量子态幺正演化的手段,一位和两位门是构成量子电路的基础.Barenco用基本的两位量子逻辑门实现n位量子逻辑门功能,张登玉在Barenco的工作基础上对用基本的两位量子逻辑门实现n位量子逻辑门功能进行了改进.通过对Barenco方案和张登玉方案的分析和研究,提出了一个用基本的两位量子逻辑门实现n位量子逻辑门功能的新方案,该方案结构更简单,且所用的两位门更易于实现,同时指出和改正了张文的不太准确的结论.
Quantum circuits are the tools of realizing the unitary evolution of quantum state, and they are mainly made up of one-bit and two-bit quantum gates. Barenco proposed a method for constructing n-bit quantum gate by using basic two-bit quantum gates in 1995. Zhang proposed the improved method for constructing n-bit quantum gate by using basic two-bit quantum gates in 2001. The method for constructing n-bit quantum gate by using basic two-bit quantum gates is proposed by improving the two methods mentioned. The scheme is more simple and easier to implement and the incorrect conclusion by Zhang is amended.
参考文献
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