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- Sebastian Y Bednarek, Bartosz Szafran, Rainer Dudek, Kristina Lis
- Physical review letters
- 2008

We show that quantum dots and quantum wires are formed underneath metal electrodes deposited on a planar semiconductor heterostructure containing a quantum well. The confinement is due to theâ€¦ (More)

- E N Osika, Bartosz Szafran
- Journal of physics. Condensed matter : anâ€¦
- 2015

We develop an effective tight-binding Hamiltonian for spin-orbit (SO) interaction in bent carbon nanotubes (CNT) for the electrons forming the Ï€ bonds between the nearest neighbor atoms. We accountâ€¦ (More)

- Sebastian Y Bednarek, Bartosz Szafran
- Physical review letters
- 2008

A design for a quantum gate performing transformations of a single electron spin is presented. The spin rotations are performed by the electron going around the closed loops in a gated semiconductorâ€¦ (More)

We study the effect of an electric field on an electron-hole pair in an asymmetric system of vertically coupled self-assembled quantum dots taking into account their nonperfect alignment. We showâ€¦ (More)

Electrostatic ~gated! quantum dots are studied by computational methods. Electronic properties of the electrostatic quantum dots are determined by the confinement potential, which is created byâ€¦ (More)

Binding energies of negative sXâˆ’d and positive trions sX+d in quantum wires are studied for strong quantum confinement of carriers which results in a numerical exactly solvable model. The relativeâ€¦ (More)

Few-electron systems confined in two-dimensional parabolic quantum dots at high magnetic fields are studied by the Hartree-Fock (HF) and exact diagonalization methods. A generalized multicenterâ€¦ (More)

We show that the order of energies of negative (X ) and positive (XÃ¾) trions in quantum wires is determined by the relative electron and hole lateral confinements. For equal electron and holeâ€¦ (More)

The effect of the electric field on an exciton confined in a pair of vertically coupled quantum dots is studied. We use a single-band approximation and a parabolic model potential. As a result ofâ€¦ (More)

- Elmar P. Wach, D P Zebrowski, Bartosz Szafran
- Journal of physics. Condensed matter : anâ€¦
- 2013

We perform a numerical simulation of the mapping of charge confined in quantum dots by the scanning probe technique. We solve the few-electron SchrÃ¶dinger equation with the exact diagonalizationâ€¦ (More)