Excitation of complex spin dynamics patterns in a quantum-dot electron spin ensemble

被引：4

作者：

Varwig, S. ^{[1
]}

Yugova, I. A. ^{[2
]}

Rene, A. ^{[1
]}

Kazimierczuk, T. ^{[1
]}

Greilich, A. ^{[1
]}

Yakovlev, D. R. ^{[3
]}

Reuter, D. ^{[4
]}

Wieck, A. D. ^{[4
]}

Bayer, M. ^{[1
,3
]}

机构：

[1] Tech Univ Dortmund, Exp Phys 2, D-44221 Dortmund, Germany

[2] St Petersburg State Univ, Spin Opt Lab, St Petersburg 198504, Russia

[3] Russian Acad Sci, Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[4] Ruhr Univ Bochum, D-44780 Bochum, Germany

来源：

PHYSICAL REVIEW B | 2014年 / 90卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.90.121301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We exploit the flexibility offered by an (In, Ga)As/GaAs quantum dot spin ensemble to demonstrate that complex dynamic evolutions can be excited in the ensemble magnetization and accessed by tailored pulsed laser protocols. The modes for spin precession about a magnetic field are adapted to the periodic excitation protocol such that at specific times the magnetization can effectively be decomposed in two, three, or four equal components with angles of pi, 2 pi/3, or pi/2 between them. Optical orientation of these components by an additional laser pulse leads to the generation of higher harmonics in the spin precession, as evidenced by time-resolved ellipticity measurements.

引用

页数：5

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