Selective control of edge-channel trajectories by scanning gate microscopy
arXiv:1312.1630 · doi:10.1016/j.physe.2009.11.146
Abstract
Electronic Mach-Zehnder interferometers in the Quantum Hall (QH) regime are currently discussed for the realization of quantum information schemes. A recently proposed device architecture employs interference between two co-propagating edge channels. Here we demonstrate the precise control of individual edge-channel trajectories in quantum point contact devices in the QH regime. The biased tip of an atomic force microscope is used as a moveable local gate to pilot individual edge channels. Our results are discussed in light of the implementation of multi-edge interferometers.
References in corpus (2)
Cited by in corpus (21)
- Real-space imaging of quantum Hall effect edge strips
- Interference features in scanning gate conductance maps of quantum point contacts with disorder
- Imaging fractional incompressible stripes in integer quantum Hall systems
- Inter-Edge Backscattering in Buried Split-Gate-Defined Graphene Quantum Point Contacts
- Imaging backscattering through impurity-induced antidots in quantum Hall constrictions
- Signatures of spin-orbit coupling in scanning gate conductance images of electron flow from quantum point contacts
- Manipulating quantum Hall edge channels in graphene through Scanning Gate Microscopy
- Edge channel mixing induced by potential steps in an integer quantum Hall system
- Imaging backscattering in graphene quantum point contacts
- Conductance response of graphene nanoribbons and quantum point contacts in the scanning probe measurements
- Scanning Gate Imaging of quantum point contacts and the origin of the 0.7 Anomaly
- Anomalous periodicity and parafermion hybridization in superconducting qubits
- Theory of scanning gate microscopy imaging of the supercurrent distribution in a planar Josephson junction
- Locally induced quantum interference in scanning gate experiments
- Mode specific backscattering in a quantum point contact
- Wave function description of conductance mapping for quantum Hall electron interferometer
- Electron backscattering in a cavity: ballistic and coherent effects
- Tunable dispersion of the edge states in the integer quantum Hall effect
- Imaging spin-resolved cyclotron trajectories in the InSb two-dimensional electron gas
- Electron paths and double-slit interference in the scanning gate microscopy
- Supercurrent modulation in InSb nanoflag-based Josephson junctions by scanning gate microscopy