title: Coherent coupling of excitons and trions in a photoexcited CdTe/CdMgTe quantum well.
abstract: We present zero-, one-, and two-quantum two-dimensional coherent spectra of excitons and trions in a CdTe/(Cd,Mg)Te quantum well. The set of spectra provides a unique and comprehensive picture of the coherent nonlinear optical response. Distinct peaks in the spectra are manifestations of exciton-exciton and exciton-trion coherent coupling. Excellent agreement using density matrix calculations highlights the essential role of many-body effects on the coupling. Strong exciton-trion coherent interactions open up the possibility for novel conditional control schemes in coherent optoelectronics.
authors.affiliation: JILA, University of Colorado & National Institute of Standards and Technology, Boulder, Colorado 80309-0440, USA and Department of Physics, University of Colorado, Boulder, Colorado 80309-0390, USA.
authors.forename: G
authors.initials: G
authors.lastname: Moody
authors.affiliation: Experimentelle Physik 2, Technische Universität Dortmund, D-44221 Dortmund, Germany and A. F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia.
authors.forename: I A
authors.initials: IA
authors.lastname: Akimov
authors.affiliation: JILA, University of Colorado & National Institute of Standards and Technology, Boulder, Colorado 80309-0440, USA.
authors.forename: H
authors.initials: H
authors.lastname: Li
authors.affiliation: JILA, University of Colorado & National Institute of Standards and Technology, Boulder, Colorado 80309-0440, USA and Department of Physics, University of Colorado, Boulder, Colorado 80309-0390, USA.
authors.forename: R
authors.initials: R
authors.lastname: Singh
authors.affiliation: Experimentelle Physik 2, Technische Universität Dortmund, D-44221 Dortmund, Germany and A. F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia.
authors.forename: D R
authors.initials: DR
authors.lastname: Yakovlev
authors.affiliation: Institute of Physics, Polish Academy of Sciences, PL-02668 Warsaw, Poland.
authors.forename: G
authors.initials: G
authors.lastname: Karczewski
authors.affiliation: Institute of Physics, Polish Academy of Sciences, PL-02668 Warsaw, Poland.
authors.forename: M
authors.initials: M
authors.lastname: Wiater
authors.affiliation: Institute of Physics, Polish Academy of Sciences, PL-02668 Warsaw, Poland.
authors.forename: T
authors.initials: T
authors.lastname: Wojtowicz
authors.affiliation: Experimentelle Physik 2, Technische Universität Dortmund, D-44221 Dortmund, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Bayer
authors.affiliation: JILA, University of Colorado & National Institute of Standards and Technology, Boulder, Colorado 80309-0440, USA and Department of Physics, University of Colorado, Boulder, Colorado 80309-0390, USA.
authors.forename: S T
authors.initials: ST
authors.lastname: Cundiff