Routing quantum information in spin chains
Quantum Physics
2013-06-14 v3
Abstract
Two different models for performing efficiently routing of a quantum state are presented. Both cases involve an XX spin chain working as data bus and additional spins that play the role of sender and receivers, one of which is selected to be the target of the quantum state transmission protocol via a coherent quantum coupling mechanism making use of local/global magnetic fields. Quantum routing is achieved, in the first of the models considered, by weakly coupling the sender and the receiver to the data bus. In the second model, strong magnetic fields acting on additional spins located between the sender/receiver and the data bus allow us to perform high fidelity routing.
Cite
@article{arxiv.1301.5610,
title = {Routing quantum information in spin chains},
author = {Simone Paganelli and Salvatore Lorenzo and Tony J. G. Apollaro and Francesco Plastina and Gian Luca Giorgi},
journal= {arXiv preprint arXiv:1301.5610},
year = {2013}
}
Comments
added references in v2