Perfect state transfer in Grover walks between states associated to vertices of a graph

Perfect state transfer in Grover walks between states associated to vertices of a graph
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Grover 中的完美状态转移在与图的顶点相关的状态之间行走

DOI:
10.1016/j.laa.2022.04.006
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发表时间:
2022
影响因子:
1.1
通讯作者:
Segawa Etsuo
Segawa Etsuo
中科院分区:
数学3区
文献类型:
--
作者:
Kubota Sho;Segawa Etsuo

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我们研究了典型的离散时间量子游动模型--Grover游动的完美态转移。特别是,我们关注与图的顶点相关联的状态。我们称这种状态为顶点型状态。利用切比雪夫多项式可以研究顶点态之间的完美态转移。给出了图的特征值在顶点类型状态之间发生完美状态转移的一个必要条件。此外,我们还完美地确定了完全多部图,其部分集的大小与顶点类型状态之间发生完美状态转移的大小相同,并与时间有关。
We study perfect state transfer in Grover walks, which are typical discrete-time quantum walk models. In particular, we focus on states associated to vertices of a graph. We call such states vertex type states. Perfect state transfer between vertex type states can be studied via Chebyshev polynomials. We derive a necessary condition on eigenvalues of a graph for perfect state transfer between vertex type states to occur. In addition, we perfectly determine the complete multipartite graphs whose partite sets are the same size on which perfect state transfer occurs between vertex type states, together with the time.
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