87 citations · 1.2k across the 46 of their papers we have counts for
46 papers
Spin-Exchange Induced Spillover on Poor Man's Majoranas in Minimal Kitaev Chains
J. E. Sanches, L. T. Lustosa, L. S. Ricco +5
The "Poor Man's Majoranas" (PMMs) [Phys. Rev. B 86, 134528 (2012)] devoid of topological protection can "spill over" from one edge into another of the minimal Kitaev chain when per…
Vortex clusters in a stirred polariton condensate
Ivan Gnusov, Stella Harrison, Sergey Alyatkin +3
The response of superfluids to the external rotation, evidenced by emergence of quantised vortices, distinguishes them from conventional fluids. In this work, we demonstrate that t…
Polariton vortex Chern insulator
Stella L. Harrison, Anton Nalitov, Pavlos G. Lagoudakis +1
We propose a vortex Chern insulator, motivated by recent experimental demonstrations on programmable arrangements of cavity polariton vortices by [Alyatkin et al., ArXiv:2207.01850…
Quantum Vortex Formation in the "Rotating Bucket'' Experiment with Polariton Condensates
Ivan Gnusov, Stella Harrison, Sergey Alyatkin +4
The appearance of quantised vortices in the classical ``rotating bucket'' experiments of liquid helium and ultracold dilute gases provides the means for fundamental and comparative…
Enhanced coupling between ballistic exciton-polariton condensates through tailored pumping
Yuan Wang, Pavlos G. Lagoudakis, Helgi Sigurdsson
We propose a method to enhance the spatial coupling between ballistic exciton-polariton condensates in a semiconductor microcavity based on available spatial light modulator techno…
Electrically tunable Berry curvature and strong light-matter coupling in birefringent perovskite microcavities at room temperature
K. Łempicka-Mirek, M. Król, H. Sigurdsson +14
The field of spinoptronics is underpinned by good control over photonic spin-orbit coupling in devices that possess strong optical nonlinearities. Such devices might hold the key t…
Screening nearest-neighbor interactions in networks of exciton-polariton condensates through spin orbit coupling
Denis Aristov, Helgi Sigurdsson, Pavlos G. Lagoudakis
We study the modification of the spatial coupling parameter between interacting ballistic exciton-polariton condensates in the presence of photonic spin orbit coupling appearing fr…
Spontaneous formation of time-periodic vortex cluster in nonlinear fluids of light
Kirill A. Sitnik, Sergey Alyatkin, Julian D. Töpfer +4
We demonstrate spontaneous formation of a nonlinear vortex cluster state in a microcavity exciton-polariton condensate with time-periodic sign flipping of its topological charges a…
Reservoir optics with exciton-polariton condensates
Y. Wang, H. Sigurdsson, J. D. Töpfer +1
We investigate an all-optical microscale planar lensing technique based on coherent fluids of semiconductor cavity exciton-polariton condensates. Our theoretical analysis underpins…
Minor embedding with Stuart-Landau oscillator networks
Stella L. Harrison, Helgi Sigurdsson, Pavlos G. Lagoudakis
We theoretically implement a strategy from quantum computation architectures to simulate Stuart-Landau oscillator dynamics in all-to-all connected networks, also referred to as com…
Old experiments in new light: Young's double-slit and Stern-Gerlach experiments in liquid crystal microcavities
Mateusz Król, Katarzyna Rechcińska, Helgi Sigurdsson +10
Spin-orbit interactions which couple spin of a particle with its momentum degrees of freedom lie at the center of spintronic applications. Of special interest in semiconductor phys…
Machine learning of phase transitions in nonlinear polariton lattices
D. Zvyagintseva, H. Sigurdsson, V. K. Kozin +4
Polaritonic lattices offer a unique testbed for studying nonlinear driven-dissipative physics. They show qualitative changes of a steady state as a function of system parameters, w…
All-optical linear polarization engineering in single and coupled exciton-polariton condensates
I. Gnusov, H. Sigurdsson, J. Toepfer +3
We demonstrate all-optical linear polarization control of exciton-polariton condensates in anisotropic elliptical optical traps. The cavity inherent TE-TM splitting lifts the groun…
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…