Evidence for intervalence band coherences in semiconductor quantum wells via coherently coupled optical stark shifts

M. E. Donovan, A. Schülzgen, J. Lee, P. A. Blanche, N. Peyghambarian, G. Khitrova, H. M. Gibbs, I. Rumyantsev, N. H. Kwong, R. Takayama, Z. S. Yang, R. Binder

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We report the experimental observation of coherently coupled heavy-hole-light-hole Stark shifts, i.e., light-hole exciton shifts under heavy-hole exciton pumping conditions, in InGaAs quantum wells. The theoretical analysis of the data is based on a full many-body approach (dynamics-controlled truncation formalism) in the third-order nonlinear optical regime. It is shown that the Stark shift data can be interpreted as strong evidence of suitably defined nonradiative intervalence band coherences in a semiconductor quantum well. Hence, the observations establish a semiconductor analog of Raman coherences in three-level atoms.

Original languageEnglish (US)
Pages (from-to)237402-1-237402-4
JournalPhysical review letters
Volume87
Issue number23
DOIs
StatePublished - Dec 3 2001

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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