GPT-4: Physicists have demonstrated that the Einstein-Podolsky-Rosen (EPR) paradox holds true even for large entangled systems of hundreds of atoms. Using two entangled Bose-Einstein condensates, each with 700 atoms, the researchers showed that the conflict between quantum mechanics and local realism does not disappear as the system size increases. This has significant implications for quantum metrology, the study of measuring things under quantum theory, and could be used to develop small sensors to probe fields and forces with high spatial resolution.
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