Trapping a particle of a quantum walk on the line
arXiv:1112.1287 · doi:10.1103/PhysRevA.85.012329
Abstract
We observe that changing a phase at a single point in a discrete quantum walk results in a rather surprising localization effect. For certain values of this phase change the possibility of localization strongly depends on the internal coin-state of the walker.
5 pages, 4 figures
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