82 citations · 444 across the 20 of their papers we have counts for
21 papers
Anomalous dispersion via dissipative coupling in a quantum well exciton-polariton microcavity
Dąbrówka Biegańska, Maciej Pieczarka, Christian Schneider +3
Although energy level repulsion is typically observed in interacting quantum systems, non-Hermitian physics predicts the effect of level attraction, which occurs when significant e…
Optical properties and dynamics of direct and spatially and momentum indirect excitons in AlGaAs/AlAs quantum wells
Dąbrówka Biegańska, Maciej Pieczarka, Krzysztof Ryczko +5
We present an experimental study on optical properties and dynamics of direct and spatially and momentum indirect excitons in AlGaAs/AlAs quantum wells near the crossover between $…
Heterogeneous integration of single InAs/InP quantum dots with the SOI chip using direct bonding
Marek Burakowski, Paweł Holewa, Aurimas Sakanas +6
Quantum information processing with photons in small-footprint and highly integrated silicon-based photonic chips requires incorporating non-classical light sources. In this respec…
On-Demand Generation of Indistinguishable Photons in the Telecom C-Band using Quantum Dot Devices
Daniel A. Vajner, Paweł Holewa, Emilia Zięba-Ostój +10
Semiconductor quantum dots (QDs) enable the generation of single and entangled photons, useful for various applications in photonic quantum technologies. Specifically for quantum c…
Fine-tunable near-critical Stranski-Krastanov growth of InAs/InP quantum dots
Yury Berdnikov, Pawel Holewa, Shima Kadkhodazadeh +6
Emerging applications of self-assembled semiconductor quantum dot (QD)-based nonclassical light sources emitting in the telecom C-band (1530 to 1565 nm) present challenges in terms…
Observation of room temperature excitons in an atomically thin topological insulator
Marcin Syperek, Raul Stühler, Armando Consiglio +10
Optical spectroscopy of ultimately thin materials has significantly enhanced our understanding of collective excitations in low-dimensional semiconductors. This is particularly ref…
Optimization of heterogeneously integrated InP-Si on-chip photonic components
P. Mrowiński, P. Holewa, A. Sakanas +3
We demonstrate comprehensive numerical studies on a hybrid III-V/Si-based waveguide system, serving as a platform for efficient light coupling between an integrated III-V quantum d…
Crossover from exciton-polariton condensation to photon lasing in an optical trap
Maciej Pieczarka, Dąbrówka Biegańska, Christian Schneider +4
Optical trapping has been proven to be an effective method of separating exciton-polariton condensates from the incoherent high-energy excitonic reservoir located at the pumping la…
Droplet epitaxy symmetric InAs/InP quantum dots for quantum emission in the third telecom window: morphology, optical and electronic properties
Paweł Holewa, Shima Kadkhodazadeh, Michał Gawełczyk +5
The rapidly developing quantum communication technology requires deterministic quantum emitters that can generate single photons and entangled photon pairs in the third telecom win…
Bright Quantum Dot Single-Photon Emitters at Telecom Bands Heterogeneously Integrated on Si
Paweł Holewa, Aurimas Sakanas, Uğur Meriç Gür +8
Whereas the Si photonic platform is highly attractive for scalable optical quantum information processing, it lacks practical solutions for efficient photon generation. Self-assemb…
Collective excitations of exciton-polariton condensates in a synthetic gauge field
D. Biegańska, M. Pieczarka, E. Estrecho +7
Collective (elementary) excitations of quantum bosonic condensates, including condensates of exciton polaritons in semiconductor microcavities, are a sensitive probe of interpartic…
Optical and electronic properties of symmetric InAs/InGaAlAs/InP quantum dots formed by a ripening process in molecular beam epitaxy: a promising system for broad-range single-photon telecom emitters
Paweł Holewa, Michał Gawełczyk, Aleksander Maryński +5
We present a detailed experimental optical study supported by theoretical modeling of InAs quantum dots (QDs) embedded in an InAlGaAs barrier lattice-matched to InP(001) grown with…
Optical and electronic properties of low-density InAs/InP quantum dot-like structures devoted to single-photon emitters at telecom wavelengths
P. Holewa, M. Gawełczyk, C. Ciostek +4
Due to their band-structure and optical properties, InAs/InP quantum dots (QDs) constitute a promising system for single-photon generation at third telecom window of silica fibers…
Observation of gain-pinned dissipative solitons in a microcavity laser
Maciej Pieczarka, Dario Poletti, Christian Schneider +4
We demonstrate an experimental approach to create dissipative solitons in a microcavity laser. In particular, we shape the spatial gain profile of a quasi-one-dimensional microcavi…
Synthesis and systematic optical investigation of selective area droplet epitaxy of InAs/InP quantum dots assisted by block copolymer lithography
Artem Shikin, Elizaveta Lebedkina, Czcibor Ciostek +6
We report on the systematic investigation of the optical properties of a selectively grown quantum dot gain material assisted by block-copolymer lithography for potential applicati…
Exciton spin relaxation in InAs/InGaAlAs/InP(001) quantum dashes emitting near 1.55 μm
M. Syperek, Ł. Dusanowski, M. Gawełczyk +5
Exciton spin and related optical polarization in self-assembled InAs/InGaAlAs/InP(001) quantum dashes emitting at 1.55 μm are investigated by means of po…
Exciton lifetime and emission polarization dispersion in strongly in-plane asymmetric nanostructures
M. Gawełczyk, M. Syperek, A. Maryński +8
We present experimental and theoretical investigation of exciton recombination dynamics and the related polarization of emission in highly in-plane asymmetric nanostructures. Consi…
Relaxation Oscillations and Ultrafast Emission Pulses in a Disordered Expanding Polariton Condensate
Maciej Pieczarka, Marcin Syperek, Łukasz Dusanowski +5
Semiconductor microcavities are often influenced by structural imperfections, which can disturb the flow and dynamics of exciton-polariton condensates. Additionally, in exciton-pol…
Ghost Branch Photoluminescence From a Polariton Fluid Under Nonresonant Excitation
Maciej Pieczarka, Marcin Syperek, Łukasz Dusanowski +8
An expanding polariton condensate is investigated under pulsed nonresonant excitation with a small laser pump spot. Far above the condensation threshold we observe a pronounced inc…
Long-lived electron spin coherence in CdSe/ZnSSe self-assembled quantum dots
M. Syperek, D. R. Yakovlev, I. A. Yugova +6
The electron spin coherence in n-doped and undoped, self-assembled CdSe/Zn(S,Se) quantum dots has been studied by time-resolved pump-probe Kerr rotation. Long-lived spin coherence…
Spin coherence of holes in GaAs/AlGaAs quantum wells
M. Syperek, D. R. Yakovlev, A. Greilich +4
The carrier spin coherence in a p-doped GaAs/(Al,Ga)As quantum well with a diluted hole gas has been studied by picosecond pump-probe Kerr rotation with an in-plane magnetic field.…