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arXiv · 2610.10251

Deterministic Vortex Generation from Coupled Trapped Polariton Condensate Triad

X. Qin·N. Pitanios·S. Dam·S. Betzold·S. Höfling·S. V. Koniakhin·P. G. Savvidis
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Abstract

We present the deterministic generation and all-optical switching of ternary topologically distinct vortex states in a triad of trapped exciton-polariton condensates with direct state readout from momentum-space emission distribution. Tuning the non-resonant pump power controls the sign of the dissipative coupling, selecting between a ferromagnetic in-phase state and two frustrated states with global phase winding. The zero-winding ferromagnetic state has unstructured far-field emission at low momenta and forms vortex-antivortex arrays at the Dirac points, reflecting the C_3v global symmetry. The two frustrated states of +-2pi winding can be activated on-demand by a control beam and produce different triangular emission patterns selectively localized at the K or K' points. Although all three states share identical real-space emission distributions, their momentum-space photoluminescence profiles distinguish them unambiguously, revealing the chirality without the need for interferometry. This enables on-demand orbital angular momentum control using a pump independent of resonant phase or OAM imprinting, establishing condensate triads as a compact platform for reconfigurable chiral light generation operating on a ternary logic basis.

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X. Qin, N. Pitanios, S. Dam, S. Betzold, S. Höfling, S. V. Koniakhin, P. G. Savvidis. 2026-10-07. Deterministic Vortex Generation from Coupled Trapped Polariton Condensate Triad. https://arxiv.org/abs/2610.10251

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