State transfer on graphs

State transfer on graphs
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DOI:
10.1016/j.disc.2011.06.032
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发表时间:
2011-02
期刊:
Discret. Math.
影响因子:
--
通讯作者:
C. Godsil
C. Godsil
中科院分区:
其他
文献类型:
--
作者:
C. Godsil

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如果X是一个具有邻接矩阵A的图,则我们定义H(t)为算子exp(itA)。我们说在时间τ X上有从顶点u到顶点v的完美态转移,如果|H(τ)u,v| =1时。状态转移已被应用于商业密码系统中的密钥分配,它似乎很可能会发现其他的应用。我们提供了一个调查的一些工作完美的状态转移和相关问题。重点几乎完全在数学上。
If X is a graph with adjacency matrix A, then we define H(t) to be the operator exp(itA). We say that we have perfect state transfer in X from the vertex u to the vertex v at time τ if the uv-entry of |H(τ)u,v|=1. State transfer has been applied to key distribution in commercial cryptosystems, and it seems likely that other applications will be found. We offer a survey of some of the work on perfect state transfer and related questions. The emphasis is almost entirely on the mathematics.