title: Single electron charging in optically active nanowire quantum dots.
abstract: We report optical experiments of a charge tunable, single nanowire quantum dot subject to an electric field tuned by two independent voltages. First, we control tunneling events through an applied electric field along the nanowire growth direction. Second, we modify the chemical potential in the nanowire with a back-gate. We combine these two field-effects to isolate a single electron and independently tune the tunnel coupling of the quantum dot with the contacts. Such charge control is a first requirement for opto-electrical single electron spin experiments on a nanowire quantum dot.
authors.affiliation: Kavli Institute of Nanoscience, Delft, The Netherlands.
authors.forename: Maarten P
authors.initials: MP
authors.lastname: van Kouwen
authors.forename: Michael E
authors.initials: ME
authors.lastname: Reimer
authors.forename: Anne W
authors.initials: AW
authors.lastname: Hidma
authors.forename: Maarten H M
authors.initials: MH
authors.lastname: van Weert
authors.forename: Rienk E
authors.initials: RE
authors.lastname: Algra
authors.forename: Erik P A M
authors.initials: EP
authors.lastname: Bakkers
authors.forename: Leo P
authors.initials: LP
authors.lastname: Kouwenhoven
authors.forename: Val
authors.initials: V
authors.lastname: Zwiller
mesh_terms: D004579:Electron Transport; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000295:instrumentation*; D055096:Optical Devices; D010316:Particle Size; D045663:Quantum Dots; D012666:Semiconductors; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*