Optically Trapped Exciton-Polariton Condensates in a Perovskite Microcavity
Maciej Zaremba, Mateusz Kędziora, Laura Stańco, Krzysztof Piskorski, Kamil Kosiel, Anna Szerling, Rafał Mazur, Wiktor Piecek, Andrzej Opala, Helgi Sigurðsson, and Barbara Piętka, Advanced Optical Materials 2500304 (2025).
Discrete Chiral Ballistic Polariton Laser
Zuzanna Werner, Andrzej Frączak, Valtýr Kári Daníelsson, Jacek Szczytko, Barbara Piętka, Helgi Sigurðsson, Laser Photonics Rev, 2500195 (2025).
Electrically Tunable Momentum Space Polarization Singularities in Liquid Crystal Microcavities
Przemysław Oliwa, Piotr Kapuściński, Maria Popławska, Marcin Muszyński, Mateusz Król, Przemysław Morawiak, Rafał Mazur, Wiktor Piecek, Przemysław Kula, Witold Bardyszewski, Barbara Piętka, Helgi Sigurðsson, Jacek Szczytko, Adv. Sci. 2500060 (2025).
Nonlinear finite-difference time-domain method for exciton-polaritons: Application to saltatory conduction in polariton neurons
K. Dini, H. Sigurðsson, N. W. E. Seet, P. M. Walker, and T. C. H. Liew, Phys. Rev. B 110, 214303 (2024).
Spin-exchange induced spillover on poor man’s Majoranas in minimal Kitaev chains
J. E. Sanches, L. T. Lustosa, L. S. Ricco, H. Sigurðsson, M. de Souza, M. S. Figueira, E. Marinho Jr and A. C. Seridonio, J. Phys.: Condens. Matter 37, 205601 (2025).
Predesigned perovskite crystal waveguides for room-temperature exciton–polariton condensation and edge lasing
Mateusz Kędziora, Andrzej Opala, Rosanna Mastria, Luisa De Marco, Mateusz Król, Karolina Łempicka-Mirek, Krzysztof Tyszka, Marek Ekielski, Marek Guziewicz, Karolina Bogdanowicz, Anna Szerling, Helgi Sigurðsson, Tomasz Czyszanowski, Jacek Szczytko, Michał Matuszewski, Daniele Sanvitto & Barbara Piętka Nature Materials 23, 1515 (2024).
Antiferromagnetic Ising model in a triangular vortex lattice of quantum fluids of light
Sergey Alyatkin, Carles Milián, Yaroslav V. Kartashov, Kirill A. Sitnik, Ivan Gnusov, Julian D. Töpfer, Helgi Sigurðsson, and Pavlos G. Lagoudakis Science Advances 10,eadj1589 (2024).
Observation of spin precession resonance in a stirred quantum fluid of light
Ivan Gnusov, Stepan Baryshev, Helgi Sigurðsson, Kirill Sitnik, Julian D. Töpfer, Sergey Alyatkin, and Pavlos G. Lagoudakis, Optica 11, 1156 (2024).
Non-Hermitian polariton–photon coupling in a perovskite open microcavity
Mateusz Kędziora, Mateusz Król, Piotr Kapuściński , Helgi Sigurðsson, Rafał Mazur , Wiktor Piecek , Jacek Szczytko , Michał Matuszewski , Andrzej Opala and Barbara Piętka., Nanophotonics 13, 2491 (2024).
Dirac exciton-polariton condensates in photonic crystal gratings
Sigurðsson, H., Nguyen, H. C., & Nguyen, H. S., Nanophotonics 13, 3503 (2024).
All-optical triangular and honeycomb lattices of exciton–polaritons
Sergey Alyatkin, Helgi Sigurðsson, Yaroslav V. Kartashov, Ivan Gnusov, Kirill Sitnik, Julian D. Töpfer, Pavlos G. Lagoudakis Applied Physics Letters 124, 062105 (2024).
Occupancy-driven Zeeman suppression and inversion in trapped polariton condensates
Sawicki, K., Dovzhenko, D., Wang, Y., Cookson, T., Sigurðsson, H., & Lagoudakis, P. G., Physical Review B 109. 125307 (2024).
Reconfigurable quantum fluid molecules of bound states in the continuum
Gianfrate, A., Sigurðsson, H., Ardizzone, V., Nguyen, H. C., Riminucci, F., Efthymiou-Tsironi, M., Baldwin, K. W., Pfeiffer, L. N., Trypogeorgos, D., De Giorgi, M., Ballarini, D., Nguyen, H. S., & Sanvitto, D., Nature Physics, (2024).
Magneto-optical induced supermode switching in quantum fluids of light
Furman, M., Mirek, R., Król, M., Pacuski, W., Sigurðsson, H., Szczytko, J., & Piętka, B., Communication Physics, 6, 196 (2023).
Next-nearest-neighbor coupling with spinor polariton condensates
Dovzhenko, D., Aristov, D., Pickup, L., Sigurðsson, H., & Lagoudakis, P., Phys. Rev. B 108, L161301 (2023).