Combating the effects of disorder in quantum state transfer
Catherine Keele, Alastair Kay · Physical Review A · 2022
In this paper we examine disorder (i.e., static imperfections in manufacture) for the fixed-Hamiltonian evolution protocol of quantum state transfer. We improve the performance by optimizing the choice of Hamiltonian and by implementing an encoding and decoding procedure on small regions at either end of the chain. We find that encoding in only the single-excitation subspace is optimal and provides substantial enhancement to the operating regime of these systems.