title: Two-photon coherent control of a single quantum dot.
abstract: We report on two-photon coherent control of the biexciton state in single Stranski-Krastanov CdSe quantum dots. Clear interference patterns are observed at twice the optical frequency. The decay of the interference contrast is nonexponential and caused by a dynamical inhomogeneous broadening of the energy levels due to long-term fluctuations in the dot environment.
authors.affiliation: Institut für Physik, Humboldt Universität zu Berlin, Newtonstrasse 15, 12489 Berlin, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Flissikowski
authors.forename: A
authors.initials: A
authors.lastname: Betke
authors.forename: I A
authors.initials: IA
authors.lastname: Akimov
authors.forename: F
authors.initials: F
authors.lastname: Henneberger