Extraction of many-body configurations from nonlinear absorption in semiconductor quantum wells

Details Extraction of many-body configurations from nonlinear absorption in semiconductor quantum wells Extraction of many-body configurations from nonlinear absorption in semiconductor quantum wells

2009-12-15

arxiv.org/abs/0912.2787v1

Phys. Rev. Lett. 104, 247401 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevLett.104.247401

Detailed electronic many-body configurations are extracted from quantitatively measured timeresolved nonlinear absorption spectra of resonantly excited GaAs quantum wells. The microscopic theory assigns the observed spectral changes to a unique mixture of electron-hole plasma, exciton, and polarization effects. Strong transient gain is observed only under co-circular pump-probe conditions and is attributed to the transfer of pump-induced coherences to the probe.

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