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# Search results

25 records were found.

## Domain free high field superlattice transport

Comment: 4 pages, 4 figures

## Decoherence and single electron charging in an electronic Mach-Zehnder interferometer

Comment: 4 pages, 6 figures, discussion of charging effect changed

## Counterflow of electrons in two isolated quantum point contacts

Comment: as published

## Edge Channel Interference Controlled by Landau Level Filling

We study the visibility of Aharonov-Bohm interference in an electronic Mach-Zehnder interferometer (MZI) in the integer quantum Hall regime. The visibility is controlled by the filling factor $\nu$ and is observed only between $\nu \approx 2.0$ and 1.0, with an unexpected maximum near $\nu=1.5$. Three energy scales extracted from the temperature and voltage dependences of the visibility change in a very similar way with the filling factor, indicating that the different aspects of the interference depend sensitively on the local structure of the compressible and incompressible strips forming the quantum Hall edge channels.

## Nonequilibrium interactions between two quantum circuits

Comment: Mauterndorf Winterschool-2008 proceedings; as published

## Nonequilibrium phenomena in adjacent electrically isolated nanostructures

Comment: EP2DS-2007 proceedings; as published

## Phonon-mediated non-equilibrium interaction between nanoscale devices

Comment: 4 pages, 3 figures

## Phonon-mediated vs. Coulombic Back-Action in Quantum Dot circuits

Quantum point contacts (QPCs) are commonly employed to capacitively detect the charge state of coupled quantum dots (QD). An indirect back-action of a biased QPC onto a double QD laterally defined in a GaAs/AlGaAs heterostructure is observed. Energy is emitted by non-equilibrium charge carriers in the leads of the biased QPC. Part of this energy is absorbed by the double QD where it causes charge fluctuations that can be observed under certain conditions in its stability diagram. By investigating the spectrum of the absorbed energy, we identify both acoustic phonons and Coulomb interaction being involved in the back-action, depending on the geometry and coupling constants.

## Measurement of the Transmission Phase through a Quantum Dot Embedded in One Arm of an Electronic Mach-Zehnder Interferometer

Comment: 5 pages, 4 figures

## Electron-avalanche amplifier based on the electronic Venturi effect

Comment: 4 pages, 4 figures