Nature CommunicationsBell correlations between momentum-entangled pairs of 4He* atomsY. S. AthreyaS. KannanX. T. YanR. J. Lewis-SwanK. V. KheruntsyanA. G. TruscottS. S. Hodgman2026-02-04Full textDOI https://doi.org/10.1038/s41467-026-69070-3