258 citations · 830 across the 35 of their papers we have counts for
28 papers · 1 filter
Search for Majorana Bound States in Short Chains of Proxmitised Quantum Dots
Bogdan R. Bułka, Karol I. Wysokiński
Majorana zero modes (MZM) appearing at the ends of artificially created one-dimensional p-wave superconductors have been intensively studied recently both theoretically and experim…
Interplay of spin orbit interaction and Andreev reflection in proximized quantum dots
Bogdan R. Bułka, Tadeusz Domański, Karol I. Wysokiński
We investigate a hybrid device consisting of two quantum dots placed between a BCS superconductor and a semiconductor with a strong spin-orbit interaction. Assuming charge tunnelin…
Detection of persistent current correlation in cavity-QED
Bogdan R. Bułka
We simulated the radiative response of the cavity quantum electrodynamics (QED) inductively coupled to the ring pierced by magnetic flux, and analyzed its spectral dependence to ge…
Cooper pair splitter in a photonic cavity: Detection of Andreev scatterings
Bogdan R. Bułka
We simulated the radiative response of the cavity quantum electrodynamics (QED) coupled to the double quantum dot Cooper pair splitter and analyzed its spectral dependence to get i…
Formation of Fano resonance in double quantum dot system
Grzegorz Michałek, Bogdan R. Bułka
Transient electron dynamics and the Fano resonance formation over time in transport through a two quantum dot system in a T-shape geometry (2QD-T) are analysed for free electrons.…
Coherent current correlations in a double-dot Cooper pair splitter
Bogdan R. Bułka
Exact analytical formulas are derived, by means of Keldysh Green functions, for currents and current correlation functions in a Cooper pair splitter modelled on a double quantum do…
Quantum coherence in noise power spectrum in two quantum dots
Bogdan R. Bułka
We present studies of quantum interference in a noise power spectrum in the system of two quantum dots (2QD) in a T-geometry. Performing the spectral decomposition we are able to s…
Statistical correlations of currents flowing via proximized quantum dot
Grzegorz Michałek, Bogdan R. Bułka, Tadeusz Domański +1
Statistical properties of the electron transport flowing through nanostructures are strongly influenced by the interactions, geometry of the system and/or by type of the external e…
Current Correlations in a Quantum Dot Ring: A Role of Quantum Interference
Bogdan R. Bułka, Jakub Łuczak
We present studies of the electron transport and circular currents induced by the bias voltage and the magnetic flux threading a ring of three quantum dots coupled with two electro…
Two-qubit logical operations in three quantum dots system
Jakub Łuczak, Bogdan R. Bułka
We consider a model of two interacting always-on, exchange-only qubits for which controlled phase (), controlled NOT (), quantum Fourier transform () and …
Landau-Zener Transitions in Spin Qubit Encoded in Three Quantum Dots
Jakub Luczak, Bogdan R. Bulka
We study generation and dynamics of an exchange spin qubit encoded in three coherently coupled quantum dots with three electrons. For two geometries of the system a linear and a tr…
Local and non-local thermopowers in three-terminal nanostructures
Grzegorz Michalek, Marcin Urbaniak, Bogdan R. Bulka +2
The thermoelectric effects in three-terminal structures with a quantum dot are considered. We propose the experimentally consistent protocol for determination of the transport coef…
Regular and singular Fermi liquid in triple quantum dots: Coherent transport studies
S. B. Tooski, B. R. Bulka, A. Ramsak
A system of three coupled quantum dots in a triangular geometry (TQD) with electron-electron interaction and symmetrically coupled to two leads is analyzed with respect to the elec…
Novel non-local effects in three-terminal hybrid devices with quantum dot
G. Michalek, T. Domanski, B. R. Bulka +1
We predict strong non-local effects in the three-terminal hybrid device, comprising the quantum dot embedded between two conducting leads and third superconducting reservoir. They…
Read-out and Dynamics of the Qubit Built on Three Quantum Dots
Jakub Luczak, Bogdan R. Bulka
We present a model of a qubit built of a three coherently coupled quantum dots with three spins in a triangular geometry. The qubit states are encoded in the doublet subspace and t…
Effect of assisted hopping on thermopower in an interacting quantum dot
S. B. Tooski, A. Ramsak, B. R. Bulka +1
We investigate the electrical conductance and thermopower of a quantum dot tunnel coupled to external leads described by an extension of the Anderson impurity model which takes int…
Interplay between direct and crossed Andreev reflections in hybrid nano-structures
Grzegorz Michalek, Bogdan R. Bulka, Tadeusz Domanski +1
The interplay between various many body effects in a quantum dot attached to two normal and one superconducting lead is considered in the limit of large superconducting gap. By the…
Entanglement in a three spin system controlled by electric and magnetic field
Jukub Luczak, Bogdan R. Bulka
We show influence of electric field and magnetic flux on spin entanglement in an artificial triangular molecule build of coherently coupled quantum dots. In a subspace of doublet s…
Linear and nonlinear Stark effect in triangular molecule
Bogdan R. Bulka, Tomasz Kostyrko, Jakub Luczak
We analyze changes of the electronic structure of a triangular molecule under the influence of an electric field (i.e., the Stark effect). The effects of the field are shown to be…
Current rectification in molecular junctions produced by local potential fields
Tomasz Kostyrko, Víctor M. García-Suárez, Colin J. Lambert +1
The transport properties of a octane-dithiol (ODT) molecule coupled to Au(001) leads are analyzed using density functional theory and non-equilibrium Green functions. It is shown t…
Quantum effects in linear and non-linear transport of T-shaped ballistic junction
J. Wrobel, P. Zagrajek, M. Czapkiewicz +6
We report low-temperature transport measurements of three-terminal T-shaped device patterned from GaAs/AlGaAs heterostructure. We demonstrate the mode branching and bend resistance…
Dynamical correlations in electronic transport through a system of coupled quantum dots
Grzegorz Michalek, Bogdan R. Bulka
Current auto- and cross-correlations are studied in a system of two capacitively coupled quantum dots. We are interested in a role of Coulomb interaction in dynamical correlations,…
Transport through quantum dots with magnetic impurities
M. Tolea, A. Aldea, B. R. Bulka
We analyze the electronic transport through a quantum dot that contains a magnetic impurity. The coherent transport of electrons is governed by the quantum confinement inside the d…
Charge dynamics effects in conductance through a large semi-open quantum dot
Piotr Stefanski, Arturo Tagliacozzo, Bogdan R. Bulka
Fano lineshapes in resonant transmission in a quantum dot imply interference between localized and extended states. The influence of the charge accumulated at the localized levels,…