Using ultracold atoms in an optical lattice, physicists observed bound excitations moving coherently under conditions that immobilize individual particles. The experiment directly probes fracton-like behavior, in which conservation laws restrict motion but permit collective movement and scattering ...Read more
A research-level mathematics challenge attracted 228 submissions comprising 4,802 pages of proofs and more than one million lines of code. Organizers report a complete formal proof of one open conjecture. Their AI-assisted evaluation system reduced false-positive judgments substantially ...Read more
Researchers demonstrated optical readout and coherent control of an individual organic molecule's electron spin, achieving millisecond-scale coherence at cryogenic temperatures. The result establishes a chemically designed spin–photon interface, suggesting a possible alternative to conventional solid-state quantum hardware ...Read more
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