Pulse-pumped double quantum dot with spin-orbit coupling

被引：14

作者：

Khomitsky, D. V. ^{[2
]}

Sherman, E. Ya. ^{[1
,3
]}

机构：

[1] Univ Basque Country, Dept Phys Chem, E-48080 Bilbao, Spain

[2] Univ Nizhny Novgorod, Dept Phys, Nizhnii Novgorod 603950, Russia

[3] Basque Fdn Sci IKERBASQUE, Bilbao 48011, Spain

来源：

EPL | 2010年 / 90卷 / 02期

关键词：

SINGLE-ELECTRON SPIN; TIME; FIELD;

D O I：

10.1209/0295-5075/90/27010

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider the full driven quantum dynamics of a qubit realized as spin of electron in a one-dimensional double quantum dot with spin-orbit coupling. The driving perturbation is taken in the form of a single half-period pulse of electric field. Spin-orbit coupling leads to a nontrivial evolution in the spin and charge densities making the dynamics in both quantities irregular. As a result, the charge density distribution becomes strongly spin-dependent. The transition from the field-induced tunneling to the strong-coupling regime is clearly seen in the charge and spin channels. These results can be important for the understanding of the techniques for the spin manipulation in nanostructures. Copyright (C) EPLA, 2010

引用

页数：6

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