A class of efficient quantum incrementer gates for quantum circuit synthesis

Xiaoyu Li, Guowu Yang, Carlos Manuel Torres, Desheng Zheng, Kang L. Wang

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

The quantum incrementer is one of the simplest quantum operators, which exhibits basic arithmetic operations such as addition, the propagation of carry qubits and the resetting of carry qubits. In this paper, three quantum incrementer gate circuit topologies are derived and compared based upon their total number of gates, the complexity of the circuits, the types of gates used and the number of carry or ancilla qubits implemented. The first case is a generalized n-qubit quantum incrementer gate with the notation of (n:0). Two other quantum incrementer topologies are proposed with the notations of (n:n-1:RE) and (n:n-1:RD). A general method is derived to decompose complicated quantum circuits into simpler quantum circuits which are easier to manage and physically implement. Due to the cancelation of intermediate unitary gates, it is shown that adding ancilla qubits slightly increases the complexity of a given circuit by the order of 3n, which pales in comparison to the complexity of the original circuit of the order n2 without reduction. Finally, a simple application of the generalized n-qubit quantum incrementer gate is introduced, which is related to quantum walks.

原文English
文章編號1350191
期刊International Journal of Modern Physics B
28
發行號1
DOIs
出版狀態Published - 2014 一月 10

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

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