Landau-Zener Topological Quantum State Transfer

被引：53

作者：

Longhi, Stefano ^{[1
,2
]}

Giorgi, Gian Luca ^{[3
]}

Zambrini, Roberta ^{[3
]}

机构：

[1] Politecn Milan, Dipartimento Fis, Piazza L da Vinci 32, I-20133 Milan, Italy

[2] CNR, Ist Foton & Nanotecnol, Piazza L da Vinci 32, I-20133 Milan, Italy

[3] Univ Illes Balears, Consejo Super Invest Cient, Inst Fis Interdisciplinar & Sistemas Complejos, UIB Campus, E-07122 Palma De Mallorca, Spain

来源：

ADVANCED QUANTUM TECHNOLOGIES | 2019年 / 2卷 / 3-4期

关键词：

Landau-Zener tunneling; quantum state transfer; spin chains; topological phases; topological protection; COMMUNICATION;

D O I：

10.1002/qute.201800090

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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, 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.

引用

页数：10

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