Magnetic-Field Control of Photon Echo from the Electron-Trion System in a CdTe Quantum Well: Shuffling Coherence between Optically Accessible and Inaccessible States

被引：30

作者：

Langer, L. ^{[1
]}

Poltavtsev, S. V. ^{[1
,2
]}

Yugova, I. A. ^{[1
,2
]}

Yakovlev, D. R. ^{[1
,3
]}

Karczewski, G. ^{[4
]}

Wojtowicz, T. ^{[4
]}

Kossut, J. ^{[4
]}

Akimov, I. A. ^{[1
,3
]}

Bayer, M. ^{[1
]}

机构：

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

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

[3] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

[4] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 15期

关键词：

SPIN;

D O I：

10.1103/PhysRevLett.109.157403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on magnetic field-induced oscillations of the photon echo signal from negatively charged excitons in a CdTe/(Cd, Mg)Te semiconductor quantum well. The oscillatory signal is due to Larmor precession of the electron spin about a transverse magnetic field and depends sensitively on the polarization configuration of the exciting and refocusing pulses. The echo amplitude can be fully tuned from the maximum down to zero depending on the time delay between the two pulses and the magnetic-field strength. The results are explained in terms of the optical Bloch equations accounting for the spin level structure of electrons and trions.

引用

页数：5

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[1] Demonstration of Atomic Frequency Comb Memory for Light with Spin-Wave Storage [J].