Effects of non-local initial conditions in the Quantum Walk on the line
Quantum Physics
2007-05-23 v1
Abstract
We report an enhancement of the decay rate of the survival probability when non-local initial conditions in position space are considered in the Quantum Walk on the line. It is shown how this interference effect can be understood analytically by using previously derived results. Within a restricted position subspace, the enhanced decay is correlated with a maximum asymptotic entanglement level while the normal decay rate corresponds to initial relative phases associated to a minimum entanglement level.
Keywords
Cite
@article{arxiv.quant-ph/0602188,
title = {Effects of non-local initial conditions in the Quantum Walk on the line},
author = {G. Abal and R. Donangelo and A. Romanelli and R. Siri},
journal= {arXiv preprint arXiv:quant-ph/0602188},
year = {2007}
}
Comments
5 pages, 1 figure, Elsevier style, to appear in Physica A