title: Coherent optical control of the quantum state of a single quantum Dot
abstract: Picosecond optical excitation was used to coherently control the excitation in a single quantum dot on a time scale that is short compared with the time scale for loss of quantum coherence. The excitonic wave function was manipulated by controlling the optical phase of the two-pulse sequence through timing and polarization. Wave function engineering techniques, developed in atomic and molecular systems, were used to monitor and control a nonstationary quantum mechanical state composed of a superposition of eigenstates. The results extend the concept of coherent control in semiconductors to the limit of a single quantum system in a zero-dimensional quantum dot.
authors.affiliation: N. H. Bonadeo, Harrison M. Randall Laboratory of Physics and Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, MI, 48109, USA. J. Erland, Harrison M. Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI, 48109,
authors.initials: NH
authors.lastname: Bonadeo
authors.initials: J
authors.lastname: Erland
authors.initials: D
authors.lastname: Gammon
authors.initials: D
authors.lastname: Park
authors.initials: DS
authors.lastname: Katzer
authors.initials: DG
authors.lastname: Steel