Imaging a single-electron quantum dot

Parisa Fallahi, Ania C. Bleszynski, Robert M. Westervelt, Jian Huang, Jamie D. Walls, Eric J. Heller, Micah Hanson, Arthur C. Gossard

Research output: Contribution to journalArticlepeer-review

76 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)223-226
Number of pages4
JournalNano Letters
Issue number2
StatePublished - Feb 2005
Externally publishedYes

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering


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