Coherent dynamics of coupled electron and hole spins in semiconductors

被引：9

作者：

Hägele, D

Hübner, J

Rühle, WW

Oestreich, M

机构：

[1] Univ Marburg, Dept Phys, D-35032 Marburg, Germany

[2] Univ Marburg, Ctr Mat Sci, D-35032 Marburg, Germany

[3] Univ Hannover, Inst Solid State Phys, Dept Nanostruct, D-30167 Hannover, Germany

来源：

SOLID STATE COMMUNICATIONS | 2001年 / 120卷 / 2-3期

关键词：

quantum wells; semiconductors; spin dynamics; time-resolved optical spectroscopy;

D O I：

10.1016/S0038-1098(01)00346-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We observe the coherent dynamics of coupled electron and hole spins within 2D-excitons. The dynamics are induced by the exchange interaction of electron and hole and by an external magnetic field tilted from the plane of a 3 nm GaAs/(AlGa)As quantum well. The observed quantum beats are well described by a Schrodinger equation for the pair of spins in a magnetic field which is solved analytically. The results lead to a controlled not (CNOT) gate, a key element in quantum computation, realized with semiconductor nanostructures. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：73 / 78

页数：6

共 19 条

[1] Spin quantum beats of 2D excitons [J].