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

M. E. Donovan, A. Schülzgen, J. Lee, Pierre Alexandre Blanche, Nasser N Peyghambarian, Galina Khitrova, H. M. Gibbs, I. Rumyantsev, Nai-Hang Kwong, R. Takayama, Z. S. Yang, Rudolf Binder

Research output: Contribution to journalArticle

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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