We study Majorana zero-mode properties in cylindrical cross-section semiconductor quantum wires based on the effective-mass theory and a discretized lattice model. Within this model influence of disordered potentials wire as well amplitude phase fluctuations superconducting order parameter are discussed. find that for typical geometries, pairing potentials, spin-orbit coupling strengths, betwee...

A problem of interacting charge carriers confined in quasi-one-dimensional ~1D! semiconductor nanostructures has been studied. We have derived an analytical 1D formula for the effective interaction potential between the confined charge carriers. We have applied both the 1D model with the effective potential and the full three-dimensional ~3D! approach to an electron pair confined in a single an...

We present an overview of experimental steps taken towards using the spin of a single electron trapped in a semiconductor quantum dot as a spin qubit [Loss and DiVincenzo, Phys. Rev. A 57, 120 (1998)]. Fabrication and characterization of a double quantum dot containing two coupled spins has been achieved, as well as initialization and single-shot read-out of the spin state. The relaxation time ...

in this paper, the electronic eigenstates and energy spectra of single and two-interacting electrons confined in a concentric double quantum rings with a perpendicular magnetic field in the presence of         on-center donor and acceptor impurities are calculated using the exact diagonalization method. for a single electron case, the binding energy of on-center donor and acceptor impurities ar...

An idea to build a solid-state analog of vacuum travelling and backward wave tubes operating in the THz frequency range has long been discussed in the literature. Experiments directed to the realization of this idea using the radiative decay of grating-coupled two-dimensional (2D) plasmons in semiconductor heterostructures have been made since 1980, however the intensity of emitted radiation re...