量子电子学报, 2010, 27 (1): 26, 网络出版: 2010-05-31
用基本两位量子逻辑门实现n位量子逻辑门的研究
n-bit quantum gate accomplished by two-bit quantum gates
量子信息 量子逻辑电路 量子逻辑门 幺正变换 Toffoli门 quantum information quantum logic circuit quantum logical gate unitary transformation Toffoli gate
摘要
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。
Abstract
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.
吕洪君, 郭俊旺, 彭斐, 吴天昊, 解光军. 用基本两位量子逻辑门实现n位量子逻辑门的研究[J]. 量子电子学报, 2010, 27(1): 26. LV Hong-jun, GUO Jun-wang, PENG Fei, WU Tian-hao, XIE Guang-jun. n-bit quantum gate accomplished by two-bit quantum gates[J]. Chinese Journal of Quantum Electronics, 2010, 27(1): 26.