Double-layer-gate architecture for few-hole GaAs quantum dots

Article English OPEN
Wang, D.Q. ; Hamilton, A.R. ; Farrer, I. ; Ritchie, D.A. ; Klochan, O. (2016)
  • Publisher: IOP Publishing
  • Subject:
    arxiv: Condensed Matter::Materials Science | Condensed Matter::Mesoscopic Systems and Quantum Hall Effect

We report the fabrication of single and double hole quantum dots using a double-layer-gate design on an undoped accumulation mode AlxGa1-xAs/GaAs heterostructure. Electrical transport measurements of a single quantum dot show varying addition energies and clear excited states. In addition, the two-level-gate architecture can also be configured into a double quantum dot with tunable inter-dot coupling.
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