Fast and robust quantum state transfer (QST) is a major requirement in quantum control and in scalable quantum information processing. Topological protection has emerged as a promising route for the realization of QST robust against sizable imperfections in the network. Here we present a scheme for robust QST of topologically protected edge states in a dimeric Su-Schrieffer-Heeger spin chain assisted by Landau-Zener tunneling. As compared to topological QST protocols based on Rabi flopping proposed in recent works, our method is more advantageous in terms of robustness against both diagonal and off-diagonal disorder in the chain, without a substantial increase of the interaction time.
Cite
@article{arxiv.1901.05157,
title = {Landau-Zener topological quantum state transfer},
author = {Stefano Longhi and Gian Luca Giorgi and Roberta Zambrini},
journal= {arXiv preprint arXiv:1901.05157},
year = {2021}
}
Comments
10 pages, 8 figures, to appear in Advanced Quantum Technologies