256 citations · 1.3k across the 28 of their papers we have counts for
28 papers
Doping-Induced Brightening of Dark Excitons and Trions in a WSe Monolayer
Grzegorz Krasucki, Artur O. Slobodeniuk, Kacper Walczyk +5
Optically dark excitonic states play a critical role in the valleytronic, electronic, and optical properties of monolayer semiconducting transition metal dichalcogenides. Here, we…
High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scales
Pavel Peterka, Artur O. Slobodeniuk, Tomáš Novotný +5
We report on experimental investigation of nonperturbative high harmonic generation (HHG) in monolayer MoS2 in the ultraviolet spectral region driven by mid-infrared light. We stud…
The impact of intraband carrier dynamics on the optical properties of two-dimensional materials: I. General theory
A. O. Slobodeniuk, T. Novotný
We consider the generation of microscopic polarization in two-dimensional semiconductors under intense optical fields in the non-resonant regime. We demonstrate that the intraband…
Rydberg series of intralayer K-excitons in WSe multilayers
Piotr Kapuscinski, Artur O. Slobodeniuk, Alex Delhomme +6
Semiconducting transition metal dichalcogenides of group VI are well-known for their prominent excitonic effects and the transition from an indirect to a direct band gap when reduc…
Synthesizing and multiplexing autonomous quantum coherences
Artur Slobodeniuk, Tomáš Novotný, Radim Filip
Quantum coherence is a crucial prerequisite for quantum technologies. Therefore, the robust generation, as autonomous as possible, of quantum coherence remains the essential proble…
Analogy and dissimilarity of excitons in monolayer and bilayer of MoSe
Łucja Kipczak, Artur O. Slobodeniuk, Tomasz Woźniak +8
Excitons in thin layers of semiconducting transition metal dichalcogenides are highly subject to the strongly modified Coulomb electron-hole interaction in these materials. Therefo…
Exchange-split multiple Rydberg series of excitons in anisotropic quasi two-dimensional ReS
P. Kapuściński, J. Dzian, A. O. Slobodeniuk +6
We perform a polarization-resolved magnetoluminescence study of excitons in ReS. We observe that two linearly polarized Rydberg series of excitons are accompanied by two other…
Ultrafast valley-selective coherent optical manipulation with excitons in WSe and MoS monolayers
A. O. Slobodeniuk, P. Koutenský, M. Bartoš +4
Increasing the speed limits of conventional electronics requires innovative approaches to manipulate other quantum properties of electrons besides their charge. An alternative appr…
Semiconductor Bloch equation analysis of optical Stark and Bloch-Siegert shifts in monolayers WSe and MoS
A. O. Slobodeniuk, P. Koutenský, M. Bartoš +4
We report on the theoretical and experimental investigation of valley-selective optical Stark and Bloch-Siegert shifts of exciton resonances in monolayers WSe and MoS induc…
Extraction of autonomous quantum coherences
Artur Slobodeniuk, Tomáš Novotný, Radim Filip
Quantum coherence is an essential resource to gain advantage over classical physics and technology. Recently, it has been proposed that a low-temperature environment can induce qua…
The optical response of artificially twisted MoS bilayers
M. Grzeszczyk, J. Szpakowski, A. O. Slobodeniuk +8
Two-dimensional layered materials offer the possibility to create artificial vertically stacked structures possessing an additional degree of freedom - .…
Rydberg series of dark excitons and the conduction band spin-orbit splitting in monolayer WSe
Piotr Kapuscinski, Alex Delhomme, Diana Vaclavkova +7
Strong Coulomb correlations together with multi-valley electronic bands in the presence of spin-orbit interaction and possible new optoelectronic applications are at the heart of s…
Nonequilibrium phase transition in transport through a driven quantum point contact
Oleksandr Gamayun, Artur Slobodeniuk, Jean-Sébastien Caux +1
We study transport of noninteracting fermions through a periodically driven quantum point contact (QPC) connecting two tight-binding chains. Initially, each chain is prepared in it…
Valley polarization of singlet and triplet trions in WS monolayer in magnetic fields
P. Kapuściński, D. Vaclavkova, M. Grzeszczyk +9
The spectral signatures associated with different negatively charged exciton complexes (trions) in a WS monolayer encapsulated in hBN, are analyzed from low temperature and pol…
Flipping exciton angular momentum with chiral phonons in MoSe/WSe heterobilayers
A. Delhomme, D. Vaclavkova, A. Slobodeniuk +11
Identifying quantum numbers to label elementary excitations is essential for the correct description of light-matter interaction in solids. In monolayer semiconducting transition m…
Energy spectrum of two-dimensional excitons in a non-uniform dielectric medium
M. R. Molas, A. O. Slobodeniuk, K. Nogajewski +7
We demonstrate that, in monolayers (MLs) of semiconducting transition metal dichalcogenides, the -type Rydberg series of excitonic states follows a simple energy ladder: $ε_n=-R…
Probing and manipulating valley coherence of dark excitons in monolayer WSe
M. R. Molas, A. O. Slobodeniuk, T. Kazimierczuk +10
Monolayers of semiconducting transition metal dichalcogenides are two-dimensional direct-gap systems which host tightly-bound excitons with an internal degree of freedom correspond…
Zeeman spectroscopy of excitons and hybridization of electronic states in few-layer WSe, MoSe and MoTe
Ashish Arora, Maciej Koperski, Artur Slobodeniuk +7
Monolayers and multilayers of semiconducting transition metal dichalcogenides (TMDCs) offer an ideal platform to explore valley-selective physics with promising applications in val…
Fine structure of -excitons in multilayers of transition metal dichalcogenides
A. O. Slobodeniuk, Ł. Bala, M. Koperski +8
Reflectance and magneto-reflectance experiments together with theoretical modelling based on the approach have been employed to study the evolution of direct ba…
Singlet and triplet trions in WS monolayer encapsulated in hexagonal boron nitride
D. Vaclavkova, J. Wyzula, K. Nogajewski +5
Embedding a WS monolayer in flakes of hexagonal boron nitride allowed us to resolve and study the photoluminescence response due to both singlet and triplet states of negativel…
Optical response of monolayer, few-layer and bulk tungsten disulfide
Maciej R. Molas, Karol Nogajewski, Artur O. Slobodeniuk +3
We present a comprehensive optical study of thin films of tungsten disulfide (WS) with layer thicknesses ranging from mono- to octalayer and in the bulk limit. It is shown that…
Optical properties of atomically thin transition metal dichalcogenides: Observations and puzzles
M. Koperski, M. R. Molas, A. Arora +4
Recent results on the optical properties of mono- and few-layers of semiconducting transition metal dichalcogenides are reviewed. Experimental observations are presented and discus…
Brightening of dark excitons in monolayers of semiconducting transition metal dichalcogenides
M. R. Molas, C. Faugeras, A. O. Slobodeniuk +4
We present low temperature magneto-photoluminescence experiments which demonstrate the brightening of dark excitons by an in-plane magnetic field applied to monolayers of diffe…
Exciton-phonon relaxation bottleneck and radiative decay of thermal exciton reservoir in two-dimensional materials
A. O. Slobodeniuk, D. M. Basko
We study exciton radiative decay in a two-dimensional material, taking into account large thermal population in the non-radiative states, from which excitons are scattered into the…