Schrödinger’s anthill: Quantum entanglement found in a crystal large enough to hold

Researchers at TU Wien have detected quantum entanglement in a centimeter-sized crystal, demonstrating that quantum effects can exist in macroscopic objects. By using quantum Fisher information, the team showed that the crystal's constituents act in a coordinated, entangled manner.
Quantum phenomena are usually associated with extremely small objects such as individual atoms, molecules, or photons that must be carefully isolated from their surroundings. But can those same strange quantum effects also exist in objects large enough to see and hold?
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