Quantum communication beyond the localization length in disordered spin chains

Phys Rev Lett. 2009 Mar 20;102(11):110501. doi: 10.1103/PhysRevLett.102.110501. Epub 2009 Mar 17.

Abstract

We study the effects of localization on quantum state transfer in spin chains. We show how to use quantum error correction and multiple parallel spin chains to send a qubit with high fidelity over arbitrary distances, in particular, distances much greater than the localization length of the chain.