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

Abstract

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

LV Hong-Jun, GUO Jun-Wang, PENG Fei, WU Tian-Hao, XIE Guang-Jun. Research of n-bit quantum gates accomplished by two-bit quantum gates[J]. J4, 2010, 27(1): 26-30.

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

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