Fabrication of coupled quantum dots for multiport access

Alexander W. Holleitner, Robert H. Blick, Karl Eberl

Research output: Contribution to journalArticlepeer-review

38 Scopus citations


A verstile two-step electron-beam fabrication technique for defining multiport quantum dots in GaAs/AlGaAs heterostructures were fabricated. It was shown that capacitive coupling of the two quantum dots was directly tuned electrostatically via two central gates. It was found that the conductance measurements gave evidence of both the continuous wide-range tunability of the dots and parallel access to the circuit.

Original languageEnglish
Pages (from-to)1887-1889
Number of pages3
JournalApplied Physics Letters
Issue number12
StatePublished - 24 Mar 2003
Externally publishedYes


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