Measuring the ultrafast dynamics of Coulomb correlation effects: Dephasing in nonequilibrium Fermi seas

Academic Article


  • We measure the dynamics of the quantum phase coherence of the wave function describing interacting electrons and holes optically excited into the continuum of a GaAs/AlGaAs quantum well. We achieve this by spectrally resolving both the transient four-wave mixing signal and the differential transmission signal arising from such interacting carriers. We observe a dynamical blue shift of the coherent four-wave mixing emission spectrum with respect to the excitation laser pulse and interpret this as a direct manifestation of the dynamic Coulomb correlation effects in this many-body system. © 1996 Optical Society of America.
  • Authors

    Digital Object Identifier (doi)

    Author List

  • Mycek MA; Bigot JY; Perakis IE; Chemla DS
  • Start Page

  • 1284
  • End Page

  • 1290
  • Volume

  • 13
  • Issue

  • 6