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Revolutionizing Quantum Science with Ultraclose Atomic Layers   In a groundbreaking study published on May 2 in the journal Science, researchers have successfully pushed the limits of how close atoms can be brought together, setting the stage for new discoveries in quantum mechanics. By utilizing a sophisticated laser technique, the team managed to compress two layers of ultracold magnetic atoms to a mere 50 nanometers apart—10 times closer than any previous efforts. This unprecedented proximity has unveiled bizarre quantum effects that were previously theoretical. The experiment focused on dysprosium atoms, known for their ability to interact at long ranges through dipole-dipole interactions. Despite the weakness of these interactions, the new technique developed by Li Du of MIT and his team surpasses traditional methods that are hindered by the diffraction limit of light. By employing lasers that trap different atomic spins with slightly varied frequencies and polarization, the r...