Spin relaxation in semiconductor quantum rings and dots-a comparative study

被引：26

作者：

Zipper, Elzbieta ^{[1
]}

Kurpas, Marcin ^{[1
]}

Sadowski, Janusz ^{[2
,3
]}

Maska, Maciej M. ^{[1
]}

机构：

[1] Silesian Univ, Inst Phys, PL-40007 Katowice, Poland

[2] Lund Univ, Max Lab, SE-22100 Lund, Sweden

[3] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2011年 / 23卷 / 11期

关键词：

ELECTRON-SPIN; MATTER QUBITS; SPECTROSCOPY; ENTANGLEMENT; SPECTRA; FIELD;

D O I：

10.1088/0953-8984/23/11/115302

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We calculate spin relaxation times due to spin-orbit-mediated electron-phonon interactions for experimentally accessible semiconductor quantum ring and dot architectures. We elucidate the differences between the two systems due to different confinement. The estimated relaxation times (at B = 1 T) are in the range between a few milliseconds to a few seconds. This high stability of spin in a quantum ring allows us to test it as a spin qubit. A brief discussion of quantum state manipulations with such a qubit is presented.

引用

页数：7

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