Supersymmetry for chiral symmetric quantum walks
Supersymmetry for chiral symmetric quantum walks
复制标题
手性对称量子行走的超对称性
DOI:
10.1007/s11128-019-2474-4
复制
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:
Suzuki Akito;Tanaka Yohei;Suzuki Akito
Quantum walks have attracted attention as a promising platform realizing topological phenomena, and many physicists have introduced various types of indices to characterize topologically protected bound states that are robust against perturbations. In this paper, we introduce an index from a supersymmetric point of view. This allows us to define indices for all chiral symmetric quantum walks such as multi-dimensional split-step quantum walks and quantum walks on graphs, for which there has been no index theory. Moreover, the index gives a lower bound on the number of bound states robust against compact perturbations. We also calculate the index for several concrete examples including the unitary transformation that appears in Grover’s search algorithm.
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影响因子:
2.5
作者:
R. Portugal;R. Santos;Tharso D. Fernandes;D. N. Gonçalves
通讯作者:
D. N. Gonçalves
影响因子:
2.5
作者:
Suzuki Akito;Tanaka Yohei
通讯作者:
Tanaka Yohei
影响因子:
6.4
作者:
Cedzich, C.;Geib, T.;Werner, R. F.
通讯作者:
Werner, R. F.
DOI:
10.1088/1751-8121/aa8fba
发表时间:
2018
期刊:
Journal of Physics A: Mathematical and Theoretical
影响因子:
--
作者:
Ryota Matsubara;Haruhide Matsuda;Nana Matsuo;Kenta Noguchi;Kenta Ozeki;Yusuke HIGUCHI and Etsuo SEGAWA
通讯作者:
Yusuke HIGUCHI and Etsuo SEGAWA
影响因子:
1.1
作者:
F. Magniez;A. Nayak;Peter C. Richter;M. Santha
通讯作者:
M. Santha