Swap action in a solid-state controllable anisotropic Heisenberg model

Correct swap action can be realized via the control of the anisotropic Heisenberg interaction in solid-state quantum systems. The conditions of performing a swap are derived by the dynamics of arbitrary bipartite pure state. It is found that swap errors can be eliminated in the presence of symmetric...

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Bibliographic Details
Published inPhysics letters. A Vol. 372; no. 7; pp. 1119 - 1122
Main Authors Hao, Xiang, Zhu, Shiqun
Format Journal Article
LanguageEnglish
Published Elsevier B.V 11.02.2008
Subjects
85.35.Be
03.67.Lx
71.70.-d
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Summary:Correct swap action can be realized via the control of the anisotropic Heisenberg interaction in solid-state quantum systems. The conditions of performing a swap are derived by the dynamics of arbitrary bipartite pure state. It is found that swap errors can be eliminated in the presence of symmetric anisotropy. In realistic quantum computers with unavoidable fluctuations, the gate fidelity of swap action is estimated. The scheme of quantum computation via the anisotropic Heisenberg interaction is implemented in a one-dimensional quantum dots. The slanting and static magnetic field can be used to adjust the anisotropy.
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2007.09.004