Antiferromagnetic Ising model in a triangular vortex lattice of quantum fluids of light
[EN] Vortices are topologically distinctive objects appearing as phase twists in coherent fields of optical beams and Bose-Einstein condensates. Structured networks and artificial lattices of coupled vortices could offer a powerful platform to study and simulate interaction mechanisms between consti...
Gespeichert in:
Hauptverfasser: | , , , , , , , |
---|---|
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | [EN] Vortices are topologically distinctive objects appearing as phase twists in coherent fields of optical beams and Bose-Einstein condensates. Structured networks and artificial lattices of coupled vortices could offer a powerful platform to study and simulate interaction mechanisms between constituents of condensed matter systems, such as antiferromagnetic interactions, by replacement of spin angular momentum with orbital angular momentum. Here, we realize such a platform using a macroscopic quantum fluid of light based on exciton-polariton condensates. We imprint all-optical hexagonal lattice that results into a triangular vortex lattice, with each cell having a vortex of charge l = +/- 1. We reveal that pairs of coupled condensates spontaneously arrange their orbital angular momentum antiparallel, implying a form of artificial orbital "antiferromagnetism." We discover that correlation exists between the emergent vortex patterns in triangular condensate lattices and the low-energy solutions of the corresponding antiferromagnetic Ising system. Our study offers a path toward spontaneously ordered vortex arrays with nearly arbitrary configurations and controlled couplings.
This work was supported by Russian Science Foundation (RSF) grant no. 21- 72- 00088. H.S. acknowledges Icelandic Research Fund (Rannis) grant no. 239552- 051. C.M. acknowledges support from the Spanish government via grant PID2021- 124618NB- C21 by MCIN/AEI/10.13039/501100011033 and "ERDF: a way of making Europe" of the European Union and the Generalitat Valenciana PROMETEO/2021/082. Y.V.K. acknowledges funding by the research project FFUU- 2024- 0003 of the Institute of Spectroscopy of the Russian Academy of Sciences.
Alyatkin, S.; Milián Enrique, C.; Kartashov, YV.; Sitnik, KA.; Gnusov, I.; Töpfer, JD.; Sigurosson, H... (2024). Antiferromagnetic Ising model in a triangular vortex lattice of quantum fluids of light. Science Advances. 10(34). https://doi.org/10.1126/sciadv.adj1589 |
---|