English

Induced on-demand revival in coined quantum walks on infinite $d$-dimensional lattices

Quantum Physics 2024-05-14 v2

Abstract

The study of recurrences and revivals in quantum systems has attracted a great deal of interest because of its importance in the control of quantum systems and its potential use in developing new technologies. In this work, we introduce a protocol to induce full-state revivals in a huge class of quantum walks on a dd-dimensional lattice governed by a cc-dimensional coin system. The protocol requires two repeated interventions in the coin degree of freedom. We also present a characterization of the walks that admits such a protocol. Moreover, we modify the quantity known as P\'olya number, typically used in the study of recurrences in classical random walks and quantum walks, to create a witness of the first revival of the walk.

Keywords

Cite

@article{arxiv.2201.03307,
  title  = {Induced on-demand revival in coined quantum walks on infinite $d$-dimensional lattices},
  author = {Mahesh N. Jayakody and Ismael L. Paiva and Asiri Nanayakkara and Eliahu Cohen},
  journal= {arXiv preprint arXiv:2201.03307},
  year   = {2024}
}

Comments

Author's accepted version