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Hamburg 2001 – scientific programme

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HL: Halbleiterphysik

HL 12: Quantenpunkte und -dr
ähte: Transporteigenschaften I

HL 12.5: Talk

Monday, March 26, 2001, 16:30–16:45, S9/10

Interacting double quantum dot circuits — •A. Hüttel1, H. Qin1, A. Holleitner1, H. Lorenz1, K. Eberl2, and R. Blick11Sektion Physik, Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, D-80539 München, Germany — 2Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, D-70569 Stuttgart, Germany

Systems of coupled quantum dots offer many interesting perspectives, one of them being the possibility that they might someday provide an implementation of a solid state quantum computer. With this in mind, a system of two adjacent quantum double-dots (“qubits”) lithographically defined in a GaAs/AlGaAs heterostructure is presented. The various capacitive interactions and coupling effects between the two qubit circuits are characterized; tests for quantum coherence are conducted.

Project funded by the Schwerpunkt Quanteninformationsverarbeitung of the DFG.

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