Quantum circuits for general multiqubit gates -: art. no. 130502

被引：238

作者：

Möttönen, M ^{[1
]}

Vartiainen, JJ ^{[1
]}

Bergholm, V ^{[1
]}

Salomaa, MM ^{[1
]}

机构：

[1] Aalto Univ, Phys Mat Lab, FIN-02015 Espoo, Finland

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 13期

基金：

日本学术振兴会; 芬兰科学院;

关键词：

D O I：

10.1103/PhysRevLett.93.130502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider a generic elementary gate sequence which is needed to implement a general quantum gate acting on n qubits-a unitary transformation with 4(n) degrees of freedom. For synthesizing the gate sequence, a method based on the so-called cosine-sine matrix decomposition is presented. The result is optimal in the number of elementary one-qubit gates, 4(n), and scales more favorably than the previously reported decompositions requiring 4(n)-2(n+1) controlled NOT gates.

引用

页码：130502 / 1

页数：4

共 18 条

[1] Quantum algorithm providing exponential speed increase for finding eigenvalues and eigenvectors [J].