Investigation of the coupling asymmetries at double-slit interference experiments
arXiv:1002.0695 · doi:10.1088/1751-8113/43/35/354017
Abstract
Double-slit experiments inferring the phase and the amplitude of the transmission coefficient performed at quantum dots (QD), in the Coulomb blockade regime, present anomalies at the phase changes depending on the number of electrons confined. This phase change cannot be explained if one neglects the electron-electron interactions. Here, we present our numerical results, which simulate the real sample geometry by solving the Poisson equation in 3D. The screened potential profile is used to obtain energy eigenstates and eigenvalues of the QD. We find that, certain energy levels are coupled to the leads stronger compared to others. Our results give strong support to the phenomenological models in the literature describing the charging of a QD and the abrupt phase changes.
conference paper, 50th anniversary of Aharonov-Bohm effect
References in corpus (9)
- Crossover from mesoscopic to universal phase for electron transmission in quantum dots
- Phase coherent transmission through interacting mesoscopic systems
- Mesoscopic to universal crossover of transmission phase of multi-level quantum dots
- Phase lapses in transmission through interacting two-level quantum dots
- Realistic modelling of quantum point contacts subject to high magnetic fields and with current bias at out of linear response regime
- Discrete charging of a quantum dot strongly coupled to external leads
- Potential landscapes and induced charges near metallic islands in three dimensions
- Level-occupation switching of the Quantum Dot, and phase anomalies in mesoscopic interferometry
- Tunability of qubit Coulomb interaction: Numerical analysis of top gate depletion in two-dimensional electron systems