Optical Control of Couplings in Polariton Condensate Lattices

S. Alyatkin, J. D. Töpfer, A. Askitopoulos, H. Sigurdsson, P. G. Lagoudakis

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12 Citations (Scopus)


We demonstrate deterministic control of the nearest and next-nearest neighbor coupling in the unit cell of a square lattice of microcavity exciton-polariton condensates. We tune the coupling in a continuous and reversible manner by optically imprinting potential barriers of variable height, in the form of spatially localized incoherent exciton reservoirs that modify the particle flow between condensates. By controlling the couplings in a 2×2 polariton cluster, we realize ferromagnetic, antiferromagnetic, and paired ferromagnetic phases and demonstrate the potential scalability of the system.

Original languageEnglish
Article number207402
JournalPhysical Review Letters
Issue number20
Publication statusPublished - 22 May 2020

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