Spectral mapping theorem of an abstract quantum walk
Spectral mapping theorem of an abstract quantum walk
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抽象量子行走的谱映射定理
DOI:
10.1007/s11128-019-2448-6
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发表时间:
2019
影响因子:
2.5
通讯作者:
Suzuki Akito
中科院分区:
文献类型:
--
作者:
Segawa Etsuo;Suzuki Akito
Given two Hilbert spaces,and, we introduce an abstract unitary operatorUonand its discriminantToninduced by a coisometry fromtoand a unitary involution on. In a particular case, these operatorsUandTbecome the evolution operator of the Szegedy walk on a graph, possibly infinite, and the transition probability operator thereon. We show the spectral mapping theorem betweenUandTvia the Joukowsky transform. Using this result, we have completely determined the spectrum of the Grover walk on the Sierpiński lattice, which is pure point and has a Cantor-like structure.
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Comput. Phys. Commun.
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Journal of Physics A: Mathematical and Theoretical
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