The spectra of the unitary matrix of an N-tessellable staggered quantum walk on a graph

被引:0
|
作者
Konno, Norio [1 ]
Ide, Yusuke [2 ]
Sato, Iwao [3 ]
机构
[1] Yokohama Natl Univ, Fac Engn, Dept Appl Math, Yokohama, Kanagawa 2408501, Japan
[2] Kanazawa Inst Technol, Nonoichi, Ishikawa 9218501, Japan
[3] Oyama Natl Coll Technol, Oyama, Tochigi 3230806, Japan
关键词
Quantum walk; Szegedy walk; Staggered quantum walk;
D O I
10.1016/j.laa.2020.10.026
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Recently, the staggered quantum walk (SQW) on a graph is discussed as a generalization of coined quantum walks on graphs and Szegedy walks. We present a formula for the time evolution matrix of a 2-tessellable SQW on a graph, and so directly give its spectra. Furthermore, we extend these results to a 3-tessellable SQW and an n(>= 4)-tessellable SQW on a graph under some condition. (C) 2020 Elsevier Inc. All rights reserved.
引用
收藏
页码:187 / 212
页数:26
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