576 citations · 5.2k across the 121 of their papers we have counts for
8 papers · 1 filter
Dynamics of a localized spin excitation close to the spin-helix regime
G. Salis, M. P. Walser, P. Altmann +2
The time evolution of a local spin excitation in a (001)-confined two-dimensional electron gas subjected to Rashba and Dresselhaus spin-orbit interactions of similar strength is in…
Scanning Gate Imaging of quantum point contacts and the origin of the 0.7 Anomaly
Andrea Iagallo, Nicola Paradiso, Stefano Roddaro +6
The origin of the anomalous transport feature appearing at conductance G \approx 0.7 x (2e2/h) in quasi-1D ballistic devices - the so-called 0.7 anomaly - represents a long standin…
Interplay of fractional quantum Hall states and localization in quantum point contacts
S. Baer, C. Rössler, E. C. de Wiljes +5
We investigate integer and fractional quantum Hall states in quantum point contacts (QPCs) of different geometries, defined in AlGaAs/GaAs heterostructures employing different dopi…
Suppression of bulk conductivity in InAs/GaSb broken gap composite quantum wells
Christophe Charpentier, Stefan Fält, Christian Reichl +6
The two-dimensional topological insulator state in InAs/GaSb quantum wells manifests itself by topologically protected helical edge channel transport relying on an insulating bulk.…
Imaging magnetoelectric subbands in ballistic constrictions
A. A. Kozikov, D. Weinmann, C. Roessler +4
We perform scanning gate experiments on ballistic constrictions in the presence of small perpendicular magnetic fields. The constrictions form the entrance and exit of a circular g…
Single-electron Double Quantum Dot Dipole-coupled to a Single Photonic Mode
Julien Basset, David-Dominik Jarausch, Anna Stockklauser +6
We have realized a hybrid solid-state quantum device in which a single-electron semiconductor double quantum dot is dipole coupled to a superconducting microwave frequency transmis…
Photon- and phonon-assisted tunneling in the three-dimensional charge stability diagram of a triple quantum dot array
Floris R. Braakman, Pierre Barthelemy, Christian Reichl +2
We report both photon- and phonon-assisted tunneling transitions in a linear array of three quantum dots, which can only be understood by considering the full three-dimensionality…
Long-range coherent coupling in a quantum dot array
Floris R. Braakman, Pierre Barthelemy, Christian Reichl +2
Controlling long-range quantum correlations is central to quantum computation and simulation. In quantum dot arrays, experiments so far rely on nearest-neighbour couplings only, an…