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arXiv · 1901.05157

Landau-Zener topological quantum state transfer

Stefano Longhi·Gian Luca Giorgi·Roberta Zambrini
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Abstract

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.

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Stefano Longhi, Gian Luca Giorgi, Roberta Zambrini. 2019-01-16. Landau-Zener topological quantum state transfer. https://doi.org/10.1002/qute.201800090

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