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22 papers · 1 filter
The block-ZXZ synthesis of an arbitrary quantum circuit
Alexis De Vos, Stijn De Baerdemacker
Given an arbitrary unitary matrix , a powerful matrix decomposition can be applied, leading to four different syntheses of a -qubit quantum circuit performin…
Inter-ribbon tunneling in graphene: an atomistic Bardeen approach
Maarten L. Van de Put, William G. Vandenberghe, Bart Sorée +2
A weakly coupled system of two crossed graphene nanoribbons exhibits direct tunneling due to the overlap of the wavefunctions of both ribbons. We apply the Bardeen transfer Hamilto…
Skyrmion-induced bound states on the surface of 3D Topological Insulators
Dimitrios Andrikopoulos, Bart Sorée, Jo De Boeck
The interaction between the surface of a 3D topological insulator and a skyrmion / anti-skyrmion structure is studied in order to investigate the possibility of electron confinemen…
Brillouin resonance broadening due to structural variations in nanoscale waveguides
Christian Wolff, Raphael Van Laer, Michael J. Steel +2
We study the impact of structural variations (that is slowly varying geometry aberrations and internal strain fields) on the width and shape of the stimulated Brillouin scattering…
Analytic solution of Ando's surface roughness model with finite domain distribution functions
Kristof Moors, Bart Sorée, Wim Magnus
Ando's surface roughness model is applied to metallic nanowires and extended beyond small roughness size and infinite barrier limit approximations for the wavefunction overlaps, su…
The Birkhoff theorem for unitary matrices of prime dimension
Alexis De Vos, Stijn De Baerdemacker
The Birkhoff's theorem states that any doubly stochastic matrix lies inside a convex polytope with the permutation matrices at the corners. It can be proven that a similar theorem…