Many-body two-quantum coherences in semiconductor nanostructures

Abstract

We present experimental coherent two-dimensional Fourier transform spectra of the exciton resonances in semiconductor quantum wells for a pulse sequence that isolates two-quantum coherences. By measuring the real part of the spectra, we can determine that the spectra are dominated by two quantum coherences due to many-body interactions, not bound biexcitons. Simulations performed using dynamics controlled truncation agree well with the experiments.

References in corpus (4)

• A Versatile Ultra-Stable Platform for Optical Multidimensional Fourier-Transform Spectroscopy
• Polarization dependence of semiconductor exciton and biexciton contributions to phase-resolved optical two-dimensional Fourier-transform spectra
• All-optical retrieval of the global phase for two-dimensional Fourier-transform spectroscopy
• Two-dimensional correlation spectroscopy of two-exciton resonances in semiconductor quantum wells

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