title: Selective optical control of electron spin coherence in singly charged GaAs-Al0.3Ga0.7As quantum dots.
abstract: Coherent transient excitation of the spin ground states in singly charged quantum dots creates optically coupled and decoupled states of the electron spin. We demonstrate selective excitation from the spin ground states to the trion state through phase sensitive control of the spin coherence via these three states, leading to partial rotations of the spin vector. This progress lays the ground work for achieving complete ultrafast spin rotations.
authors.affiliation: The H. M. Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA.
authors.forename: Yanwen
authors.initials: Y
authors.lastname: Wu
authors.forename: Erik D
authors.initials: ED
authors.lastname: Kim
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Xu
authors.forename: Jun
authors.initials: J
authors.lastname: Cheng
authors.forename: D G
authors.initials: DG
authors.lastname: Steel
authors.forename: A S
authors.initials: AS
authors.lastname: Bracker
authors.forename: D
authors.initials: D
authors.lastname: Gammon
authors.forename: Sophia E
authors.initials: SE
authors.lastname: Economou
authors.forename: L J
authors.initials: LJ
authors.lastname: Sham