French National Centre for Scientific Research

New Capabilities

Provided theory and co-authored the work

On November 9, 2026, an international team reported a supersolid made from exciton polaritons, hybrid particles that combine light and matter. The state appeared at temperatures approaching 60°C, roughly 140°F, inside a liquid-crystal microcavity. That removes the ultracold cooling normally required for supersolid experiments.

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