Influence of Realistic Potential Profile of Coupled Electron Waveguide on Electron Switching Characteristics

We perform numerical simulations of the switching characteristics of coupled quantum wires with different potential profiles. Our calculations reveal a reduced efficiency of switching between the wires, when their profile is close to that expected for an experimental implementation of the system. We also demonstrate a novel manifestation of electron-stub-tuner behavior in a slightly asymmetric configuration of the coupled wires