title: Imaging a single-electron quantum dot.
abstract: Images of a single-electron quantum dot were obtained in the Coulomb blockade regime at liquid He temperatures using a cooled scanning probe microscope (SPM). The charged SPM tip shifts the lowest energy level in the dot and creates a ring in the image corresponding to a peak in the Coulomb-blockade conductance. Fits to the line shape of the ring determine the tip-induced shift of the energy of the electron state in the dot. SPM manipulation of electrons in quantum dots promises to be useful in understanding, building, and manipulating circuits for quantum information processing.
authors.affiliation: Division of Engineering and Applied Sciences, Department of Physics, Harvard University, Cambridge, MA 02138, USA.
authors.forename: Parisa
authors.initials: P
authors.lastname: Fallahi
authors.forename: Ania C
authors.initials: AC
authors.lastname: Bleszynski
authors.forename: Robert M
authors.initials: RM
authors.lastname: Westervelt
authors.forename: Jian
authors.initials: J
authors.lastname: Huang
authors.forename: Jamie D
authors.initials: JD
authors.lastname: Walls
authors.forename: Eric J
authors.initials: EJ
authors.lastname: Heller
authors.forename: Micah
authors.initials: M
authors.lastname: Hanson
authors.forename: Arthur C
authors.initials: AC
authors.lastname: Gossard
mesh_terms: D001152:Arsenicals / Q000737:chemistry* / Q000528:radiation effects; D004735:Energy Transfer; D005615:Freezing; D005708:Gallium / Q000737:chemistry* / Q000528:radiation effects; D008027:Light; D008422:Materials Testing / Q000379:methods*; D020527:Microscopy, Scanning Probe / Q000379:methods*; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry / Q000528:radiation effects* / Q000648:ultrastructure*; D010316:Particle Size; D045663:Quantum Dots
chemical_list: D001152:Arsenicals; C043055:gallium arsenide; D005708:Gallium