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arXiv · 2506.20924

Mirror-mediated long-range coupling and robust phase locking of spatially separated exciton-polariton condensates

Shuang Liang·Hassan Alnatah·Qi Yao·Jonathan Beaumariage·Ken West·Kirk Baldwin·Adbhut Gupta·Loren N. Pfeiffer·Natalia G. Berloff·David W. Snoke
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Abstract

Lattice arrays are valuable simulators for complex mathematical problems, but physical systems typically allow only short-range coupling. We demonstrate a method for independently tunable, long-range interactions between polariton condensates in two-dimensional lattices by using vertical emission and external imaging to couple arbitrary sites. Two geometrically isolated condensates are phase-locked without planar coupling, verified via phase-resolved interferometry. Analytical modeling reveals mechanisms for robust coherence. The mirror-based scheme, free of cameras or modulators, offers a pure, high-bandwidth analogt element. Extension to dense graphs via segmented micro-mirrors is limited only by imaging optics, enabling scalable, energy-efficient polaritonic hardware for neuromorphic computation.

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Shuang Liang, Hassan Alnatah, Qi Yao, Jonathan Beaumariage, Ken West, Kirk Baldwin, Adbhut Gupta, Loren N. Pfeiffer, Natalia G. Berloff, David W. Snoke. 2025-06-26. Mirror-mediated long-range coupling and robust phase locking of spatially separated exciton-polariton condensates. https://arxiv.org/abs/2506.20924

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