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Landau–Zener Topological Quantum State Transfer

AuthorsLonghi, Stefano; Giorgi, Gian Luca ; Zambrini, Roberta
KeywordsLandau–Zener tunneling
Quantum state transfer
Spin chains
Topological phases
Topological protection
Issue DateApr-2019
CitationAdvanced Quantum Technologies 2(3-4): 1800090 (2019)
AbstractFast 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, a scheme is presented 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, the 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.
Publisher version (URL)https://doi.org/10.1002/qute.201800090
Appears in Collections:(IFISC) Artículos
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