Limit density of 2D quantum walk: zeroes of the weight function
Limit density of 2D quantum walk: zeroes of the weight function
复制标题
二维量子行走的极限密度:权函数的零点
DOI:
10.4036/iis.2017.a.03
复制
发表时间:
2017
期刊:
影响因子:
--
通讯作者:
I. Jex
中科院分区:
文献类型:
--
作者:
M. Štefaňák;I. Bezdeková;I. Jex
Properties of the probability distribution generated by a discrete-time quantum walk, such as the number of peaks it contains, depend strongly on the choice of the initial condition. In the present paper we discuss from this point of view the model of the two-dimensional quantum walk analyzed in K. Watabe et al., Phys. Rev. A 77, 062331, (2008). We show that the limit density can be altered in such a way that it vanishes on the boundary or some line. Using this result one can suppress certain peaks in the probability distribution. The analysis is simplified considerably by choosing a more suitable basis of the coin space, namely the one formed by the eigenvectors of the coin operator.
DOI:
--
发表时间:
2008
期刊:
Phys. Rev. A 77
影响因子:
--
作者:
K. Watabe;N. Kobayashi;M. Katori;N. Konno
通讯作者:
N. Konno
DOI:
--
发表时间:
2007
期刊:
Phys. Rev. A 76
影响因子:
--
作者:
T. Miyazaki;M. Katori;N. Konno
通讯作者:
N. Konno