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Helgi Sigurðsson - Rannsóknasérfræðingur

Helgi Sigurðsson

–

Verkfræði- og náttúruvísindasvið

Helgi SigurðssonHann/Hans

Rannsóknasérfræðingur

Rannsóknasérfræðingur

Aðsetur
VR-3 / V03-208
Tölvupóstur
helg [hjá] hi.is

Starfseining
Eðlisvísindastofnun, Eðlisfræðistofa
Vefsíða
https://www.liquid-light.fuw.edu.pl/

ORCID vefsíða
https://orcid.org/0000-0002-4156-4414
Rannsóknagátt – Helgi Sigurðsson

Show Útgefið efni

2025

Discrete Chiral Ballistic Polariton LaserLaser and Photonics Reviews
Electrically Tunable Momentum Space Polarization Singularities in Liquid Crystal MicrocavitiesAdvanced Science
Spin-exchange induced spillover on poor man’s Majoranas in minimal Kitaev chainsJournal of Physics Condensed Matter

2024

All-optical triangular and honeycomb lattices of exciton–polaritonsApplied Physics Letters
Antiferromagnetic Ising model in a triangular vortex lattice of quantum fluids of lightScience advances
Chiral and edge-lasing with perovskite crystals of arbitrary shape
Dirac exciton–polariton condensates in photonic crystal gratingsNanophotonics
Non-Hermitian polariton–photon coupling in a perovskite open microcavityNanophotonics
Nonlinear finite-difference time-domain method for exciton-polaritons: Application to saltatory conduction in polariton neuronsPhysical Review B
Observation of spin precession resonance in a stirred quantum fluid of lightOptica
Occupancy-driven Zeeman suppression and inversion in trapped polariton condensatesPhysical Review B
Predesigned perovskite crystal waveguides for room-temperature exciton–polariton condensation and edge lasingNature Materials
Reconfigurable quantum fluid molecules of bound states in the continuumNature Physics
Versatile perovskites enable room-temperature topological polaritonicsNature Nanotechnology
Vortex clusters in a stirred polariton condensatePhysical Review B

2023

Directional planar antennae in polariton condensatesApplied Physics Letters
Magneto-optical induced supermode switching in quantum fluids of lightCommunications Physics
Minor embedding with Stuart-Landau oscillator networksPhysical Review Research
Next-nearest-neighbor coupling with spinor polariton condensatesPhysical Review B
Polariton vortex Chern insulator [Invited]Optical Materials Express
Quantum vortex formation in the “rotating bucket” experiment with polariton condensatesScience advances
Reservoir microlensing in polariton condensates

2022

Electrically tunable Berry curvature and strong light-matter coupling in liquid crystal microcavities with 2D perovskiteScience advances
Engineering Photon Statistics in a Spinor Polariton CondensatePhysical Review Letters
Enhanced coupling between ballistic exciton-polariton condensates through tailored pumpingPhysical Review B
Machine learning of phase transitions in nonlinear polariton latticesCommunications Physics
Persistent Self-Induced Larmor Precession Evidenced through Periodic Revivals of CoherencePhysical Review Letters
Screening nearest-neighbor interactions in networks of exciton-polariton condensates through spin orbit couplingPhysical Review B
Solving the max-3-cut problem with coherent networksPhysical Review Applied
Spontaneous Formation of Time-Periodic Vortex Cluster in Nonlinear Fluids of LightPhysical Review Letters

2021

All-Optical Linear-Polarization Engineering in Single and Coupled Exciton-Polariton CondensatesPhysical Review Applied
Engineering spatial coherence in lattices of polariton condensatesOptica
Geometric frustration in polygons of polariton condensates creating vortices of varying topological chargeNature Communications
Observation of second-order meron polarization textures in optical microcavitiesOptica
Optically controlled polariton condensate moleculesPhysical Review B
Photonic Berry curvature in double liquid crystal microcavities with broken inversion symmetryPhysical Review B
Polariton spin jets through optical controlPhysical Review B
Quantum ﬂuids of light in all-optical scatterer latticesNature Communications
Realizing Optical Persistent Spin Helix and Stern-Gerlach Deflection in an Anisotropic Liquid Crystal MicrocavityPhysical Review Letters
Reservoir optics with exciton-polariton condensatesPhysical Review B
Vortex crystals in optically trapped exciton-polariton condensates

2020

Hysteresis in linearly polarized nonresonantly driven exciton-polariton condensatesPhysical Review Research
Lotka-Volterra population dynamics in coherent and tunable oscillators of trapped polariton condensatesPhysical Review B
Optical Control of Couplings in Polariton Condensate LatticesPhysical Review Letters
Optical orientation, polarization pinning, and depolarization dynamics in optically confined polariton condensatesPhysical Review B
Pseudo-spin destabilization in optically confined exciton-polariton condensates
Synchronization in optically trapped polariton Stuart-Landau networksPhysical Review B
Synthetic band-structure engineering in polariton crystals with non-Hermitian topological phasesNature Communications
Time-delay polaritonicsCommunications Physics

2019

All-to-All Intramodal Condensate Coupling by Multifrequency Excitation of PolaritonsACS Photonics
Amplification of nonlinear polariton pulses in waveguidesOptics Express
Observation of inversion, hysteresis, and collapse of spin in optically trapped polariton condensatesPhysical Review B
Optical control of coupling in phase-locked polariton dyads
Optically trapped polariton condensates as semiclassical time crystalsPhysical Review A
Probabilistic solving of NP -hard problems with bistable nonlinear optical networksPhysical Review B
Spontaneous topological transitions in a honeycomb lattice of exciton-polariton condensates due to spin bifurcationsPhysical Review B

2018

Parity bifurcations in trapped multistable phase locked exciton-polariton condensatesPhysical Review B
Spin Domains in One-Dimensional Conservative Polariton SolitonsACS Photonics
Transition from Propagating Polariton Solitons to a Standing Wave Condensate Induced by InteractionsPhysical Review Letters

2017

Driven-dissipative spin chain model based on exciton-polariton condensatesPhysical Review B
Electrical and optical switching in the bistable regime of an electrically injected polariton laserPhysical Review B
Parity solitons in nonresonantly driven-dissipative condensate channelsPhysical Review B
Spin Order and Phase Transitions in Chains of Polariton CondensatesPhysical Review Letters
Spontaneous and superfluid chiral edge states in exciton-polariton condensatesPhysical Review B

2016

Half-skyrmion spin textures in polariton microcavitiesPhysical Review B

2015

Aharonov-Bohm effect for excitons in a semiconductor quantum ring dressed by circularly polarized lightPhysical Review B - Condensed Matter and Materials Physics
Aharonov-Bohm effect induced by circularly polarized lightSuperlattices and Microstructures
Polariton spin whirlsPhysical Review B - Condensed Matter and Materials Physics
Switching waves in multilevel incoherently driven polariton condensatesPhysical Review B - Condensed Matter and Materials Physics

2014

Information processing with topologically protected vortex memories in exciton-polariton condensatesPhysical Review B - Condensed Matter and Materials Physics
Optically induced Aharonov-Bohm effect in mesoscopic ringsPhysical Review B - Condensed Matter and Materials Physics
Vortices in spinor cold exciton condensates with spin-orbit interactionPhysical Review B - Condensed Matter and Materials Physics

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