Antiferromagnetic Ising Model in a Triangular Vortex Lattice of Quantum Fluids of Light

Overview

Journal Sci Adv

Specialties Biology
Science

Date 2024 Aug 23

PMID 39178267

Authors

Sergey Alyatkin

Carles Milian

Yaroslav V Kartashov

Kirill A Sitnik

Ivan Gnusov

Julian D Topfer

Helgi Sigurdsson

Pavlos G Lagoudakis

Affiliations

Soon will be listed here.

Abstract

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 = ±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.

Citing Articles

Qubit analog with polariton superfluid in an annular trap.

Barrat J, Tzortzakakis A, Niu M, Zhou X, Paschos G, Petrosyan D Sci Adv. 2024; 10(43):eado4042.

PMID: 39441935 PMC: 11498216. DOI: 10.1126/sciadv.ado4042.

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