Fast optical preparation, control, and readout of a single quantum dot spin

被引：135

作者：

Ramsay, A. J. ^{[1
]}

Boyle, S. J. ^{[1
]}

Kolodka, R. S. ^{[1
]}

Oliveira, J. B. B. ^{[1
,2
]}

Skiba-Szymanska, J. ^{[1
]}

Liu, H. Y. ^{[3
]}

Hopkinson, M. ^{[3
]}

Fox, A. M. ^{[1
]}

Skolnick, M. S. ^{[1
]}

机构：

[1] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England

[2] Univ Estadual Paulista, Dept Fis, BR-17033360 Bauru, SP, Brazil

[3] Univ Sheffield, Dept Elect & Elect Engn, Sheffield S1 3JD, S Yorkshire, England

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 19期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.100.197401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose and demonstrate the sequential initialization, optical control, and readout of a single spin trapped in a semiconductor quantum dot. Hole spin preparation is achieved through ionization of a resonantly excited electron-hole pair. Optical control is observed as a coherent Rabi rotation between the hole and charged-exciton states, which is conditional on the initial hole spin state. The spin-selective creation of the charged exciton provides a photocurrent readout of the hole spin state.

引用

页数：4

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