Abstract
We observe the localization effect of one-dimensional quantum walks with single-point phase defects. The walker's spread velocity is dramatically suppressed by interference effects due to the phase defect. We show that the localization effect depends on four factors: the value and the position of the phase defect, the parameter of coin flipping, and the initial state of the walker + coin system.
- Received 3 February 2014
DOI:https://doi.org/10.1103/PhysRevA.89.042317
©2014 American Physical Society