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- Ludwig-Maximilians-Universität MünchenDE15 papers
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- Max Planck Institute for Solid State ResearchDE2 papers
- University of Wisconsin–MadisonUS2 papers
- Adam Mickiewicz University in PoznańPL1 paper
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7 papers · 1 filter
Intrinsic phonon decoherence and quantum gates in coupled lateral quantum dot charge qubits
Markus J. Storcz, Udo Hartmann, Sigmund Kohler +1
Recent experiments by Hayashi et al. [Phys. Rev. Lett. 91, 226804 (2003)] demonstrate coherent oscillations of a charge quantum bit (qubit) in laterally defined quantum dots. We st…
Molecular states in a one-electron double quantum dot
A. K. Huettel, S. Ludwig, H. Lorenz +2
The transport spectrum of a strongly tunnel-coupled one-electron double quantum dot electrostatically defined in a GaAs/AlGaAs heterostructure is studied. At finite source-drain-vo…
Direct control of the tunnel splitting in a one-electron double quantum dot
A. K. Huettel, S. Ludwig, K. Eberl +1
Quasi-static transport measurements are employed on a laterally defined tunnel-coupled double quantum dot. A nearby quantum point contact allows us to track the charge as added to…
Low-temperature, in situ tunable, uniaxial stress measurements in semiconductors using a piezoelectric actuator
M. Shayegan, K. Karrai, Y. P. Shkolnikov +3
We demonstrate the use of a piezoelectric actuator to apply, at low temperatures, uniaxial stress in the plane of a two-dimensional electron system confined to a modulation-doped A…
Periodic Field Emission from an Isolated Nano-Scale Electron Island
D. V. Scheible, C. Weiss, J. P. Kotthaus +1
We observe field emission from an isolated nano-machined gold island. The island is able to mechanically oscillate between two facing electrodes, which provide recharging and detec…
Slow two-level systems in point contacts
A. Halbritter, L. Borda, A. Zawadowski
A great variety of experiments, like heat release measurements, acoustic measurements, and transport measurements on mesoscopic samples have proved that two level systems (TLSs) ha…