Mode locking of electron spin coherences in singly charged quantum dots

被引：396

作者：

Greilich, A.

Yakovlev, D. R. ^{[1
]}

Shabaev, A.

Efros, Al. L.

Yugova, I. A.

Oulton, R.

Stavarache, V.

Reuter, D.

Wieck, A.

Bayer, M.

机构：

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

[2] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

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

[4] George Mason Univ, Sch Computat Sci, Fairfax, VA 22030 USA

[5] St Petersburg State Univ, Inst Phys, St Petersburg 198504, Russia

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

来源：

SCIENCE | 2006年 / 313卷 / 5785期

关键词：

D O I：

10.1126/science.1128215

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The fast dephasing of electron spins in an ensemble of quantum dots is detrimental for applications in quantum information processing. We show here that dephasing can be overcome by using a periodic train of light pulses to synchronize the phases of the precessing spins, and we demonstrate this effect in an ensemble of singly charged ( In, Ga) As/GaAs quantum dots. This mode locking leads to constructive interference of contributions to Faraday rotation and presents potential applications based on robust quantum coherence within an ensemble of dots.

引用

页码：341 / 345

页数：5

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