Edge-locking and quantum control in highly polarized spin chains
Mesoscale and Nanoscale Physics
2010-09-20 v1 Strongly Correlated Electrons
Abstract
For an open-boundary spin chain with anisotropic Heisenberg (XXZ) interactions, we present states in which a connected block near the edge is polarized oppositely to the rest of the chain. We show that such blocks can be `locked' to the edge of the spin chain, and that there is a hierarchy of edge-locking effects at various orders of the anisotropy. The phenomenon enables dramatic control of quantum state transmission: the locked block can be freed by flipping a single spin or a few spins.
Cite
@article{arxiv.0906.0996,
title = {Edge-locking and quantum control in highly polarized spin chains},
author = {Masudul Haque},
journal= {arXiv preprint arXiv:0906.0996},
year = {2010}
}
Comments
4 pages, 4 figures