Robust manipulation of electron spin coherence in an ensemble of singly charged quantum dots

被引：28

作者：

Greilich, A.

Wiemann, M.

Hernandez, F. G. G. ^{[1
]}

Yakovlev, D. R.

Yugova, I. A.

Bayer, M.

Shabaev, A.

Efros, A. L.

Reuter, D.

Wieck, A.

机构：

[1] Univ Dortmund, D-44221 Dortmund, Germany

[2] USN, Res Lab, Washington, DC 20375 USA

[3] Ruhr Univ Bochum, Angewandte Festkorperphys, D-44780 Bochum, Germany

来源：

PHYSICAL REVIEW B | 2007年 / 75卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.75.233301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using the recently reported mode-locking effect [A. Greilich , Science 313, 341 (2006)], we demonstrate a highly robust control of electron spin coherence in an ensemble of (In,Ga)As quantum dots during the single spin coherence time. The spin precession in a transverse magnetic field can be fully controlled up to 25 K by the parameters of the exciting pulsed laser protocol such as the pulse train sequence, leading to adjustable quantum beat bursts in Faraday rotation. Flipping of the electron spin precession phase was demonstrated by inverting the polarization within a pulse doublet sequence.

引用

页数：4

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