J4 ›› 2010, Vol. 27 ›› Issue (1): 26-30.

• 量子光学 • 上一篇    下一篇

用基本两位量子逻辑门实现N位量子逻辑门的研究

吕洪君 郭俊旺 彭斐 吴天昊 解光军   

  1. 合肥工业大学电子科学与应用物理学院, 安徽 合肥 230009
  • 出版日期:2010-01-28 发布日期:2009-12-30
  • 通讯作者: 吕洪君(1958-),男,硕士,合肥工业大学电子科学与应用物理学院副教授,主要从事量子信息方面的研究。
  • 基金资助:

    安徽省自然科学基金(090412038)和安徽省人才开发基金(2007Z028)

Research of n-bit quantum gates accomplished by two-bit quantum gates

LV Hong-Jun, GUO Jun-Wang, PENG Fei, WU Tian-Hao, XIE Guang-Jun   

  1. School of Electronic Science & Applied Physics, Hefei University of Technology, Hefei 230009, China
  • Published:2010-01-28 Online:2009-12-30

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。

关键词: 量子电路, 量子逻辑门, 幺正变换, Toffoli门

Abstract:

The quantum circuits are the tools of realizing the unitary evolution of the quantum state, and they are mainly made up of those one-bit and two-bit quantum gates. Adriano Barenco proposed a method for constructing n-bit quantum gate by using basic two-bit quantum gates in 1995. then Zhang Dengyu 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 researching and analyzing the two methods. The scheme is more simple and easier to implement and the incorrect conclusion is amended.

Key words: quantum circuit, quantum logical gate, unitary transformation, Toffoli gate