QUANTUM WALKS ON SIERPINSKI GASKETS
QUANTUM WALKS ON SIERPINSKI GASKETS
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量子在谢尔宾斯基垫片上行走
DOI:
10.1142/s021974991350069x
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发表时间:
2012
影响因子:
1.2
通讯作者:
S. Boettcher
中科院分区:
文献类型:
--
作者:
P. Lara;R. Portugal;S. Boettcher
We analyze discrete-time quantum walks on Sierpinski gaskets using a flip-flop shift operator with the Grover coin. We obtain the scaling of two important physical quantities: The mean-square displacement, and the mixing time as function of the number of points. The Sierpinski gasket is a fractal that lacks translational invariance and the results differ from those described in the literature for ordinary lattices. We find that the diffusion scaling depends on the initial location. Averaged over all initial locations, our simulation obtain an exponent very similar to the classical diffusion.