87 citations · 1.2k across the 46 of their papers we have counts for
12 papers · 1 filter
Engineering photon statistics in a spinor polariton condensate
Stepan Baryshev, Anton V. Zasedatelev, Helgi Sigurdsson +4
We implement full polarization tomography on the photon correlations in a spinor exciton-polariton condensate. Our measurements reveal condensate pseudospin mean-field dynamics spa…
Polariton spin jets through optical control
Lucinda Pickup, Julian D. Töpfer, Helgi Sigurdsson +1
We demonstrate spin polarized jets in extended systems of ballistic exciton-polariton condensates in semiconductor microcavities using optical non-resonant excitation geometries. T…
Optically controlled polariton condensate molecules
E. D. Cherotchenko, H. Sigurdsson, A. Askitopoulos +1
A condensed matter platform for analogue simulation of complex two-dimensional molecular bonding configurations, based on optically trapped exciton-polariton condensates is propose…
Observation of second order meron polarisation textures in optical microcavities
M. Król, H. Sigurdsson, K. Rechcińska +12
Multicomponent Bose-Einstein condensates, quantum Hall systems, and chiral magnetic materials display twists and knots in the continuous symmetries of their order parameter, known…
Lotka-Volterra population dynamics in coherent and tunable oscillators of trapped polariton condensates
Julian D. Töpfer, Helgi Sigurdsson, Sergey Alyatkin +1
We demonstrate a regime in which matter-wave condensates of exciton-polaritons trapped in an elliptically shaped two-dimensional potential appear as a coherent mixture of ground an…
Photonic Berry curvature in double liquid crystal microcavities with broken inversion symmetry
Pavel Kokhanchik, Helgi Sigurdsson, Barbara Piętka +2
We investigate a photonic device consisting of two coupled optical cavities possessing Rashba-Dresselhaus spin-orbit coupling, TE-TM splitting, and linear polarisation splitting th…
Engineering spatial coherence in lattices of polariton condensates
Julian D. Töpfer, Ioannis Chatzopoulos, Helgi Sigurdsson +3
Artificial lattices of coherently coupled macroscopic states are at the heart of applications ranging from solving hard combinatorial optimisation problems to simulating complex ma…
Solving the max-3-cut problem using synchronized dissipative networks
Stella L. Harrison, Helgi Sigurdsson, Sergey Alyatkin +2
Many computational problems are intractable through classical computing and, as Moore's law is drawing to a halt, demand for finding alternative methods in tackling these problems…
Quantum fluids of light in all-optical scatterer lattices
Sergey Alyatkin, Helgi Sigurdsson, Alexis Askitopoulos +2
One of the recently established paradigms in condensed matter physics is examining a system's behaviour in artificially constructed potentials, giving insight into physical phenome…
Coherence Revivals of a Spinor Polariton Condensate from Self-induced Larmor Precession
Alexis Askitopoulos, Helgi Sigurdsson, Ivan Gnusov +4
First order coherence measurements of a polariton condensate, reveal a regime where the condensate pseudo-spin precesses persistently within the driving optical pulse. Within a sin…
Optical orientation, polarization pinning, and depolarization dynamics in optically confined polariton condensates
Ivan Gnusov, Helgi Sigurdsson, Stepan Baryshev +3
We investigate the optical orientation, polarization pinning, and depolarization of optically confined semiconductor exciton-polariton condensates. We perform a complete mapping of…
Synthetic band-structure engineering in polariton crystals with non-Hermitian topological phases
L. Pickup, H. Sigurdsson, J. Ruostekoski +1
Synthetic crystal lattices provide ideal environments for simulating and exploring the band structure of solid-state materials in clean and controlled experimental settings. Physic…