Two-Quantum Many-Body Coherences in Two-Dimensional Fourier-Transform Spectra of Exciton Resonances in Semiconductor Quantum Wells

被引：114

作者：

Karaiskaj, Denis ^{[1
,2
]}

Bristow, Alan D. ^{[1
,2
]}

Yang, Lijun ^{[3
]}

Dai, Xingcan ^{[1
,2
]}

Mirin, Richard P. ^{[4
]}

Mukamel, Shaul ^{[3
]}

Cundiff, Steven T. ^{[1
,2
]}

机构：

[1] Natl Inst Stand & Technol, JILA, Boulder, CO 80309 USA

[2] Univ Colorado, Boulder, CO 80309 USA

[3] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA

[4] Natl Inst Stand & Technol, Boulder, CO 80305 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 11期

基金：

美国国家科学基金会;

关键词：

OPTICAL-RESPONSE; SPECTROSCOPY; EXCITATION; PHASE;

D O I：

10.1103/PhysRevLett.104.117401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present experimental coherent two-dimensional Fourier-transform spectra of Wannier exciton resonances in semiconductor quantum wells generated by a pulse sequence that isolates two-quantum coherences. By measuring the real part of the signals, we determine that the spectra are dominated by two-quantum coherences due to mean-field many-body interactions, rather than bound biexcitons. Simulations performed using dynamics controlled truncation agree with the experiments.

引用

页数：4

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