Quantum Fisher Information calculation (IMAGE)
Caption
A material’s spins, depicted as red spheres, are probed by scattered neutrons. Applying an entanglement witness, such as the QFI calculation pictured, causes the neutrons to form a kind of quantum gauge. This gauge allows the researchers to distinguish between classical and quantum spin fluctuations.
Credit
Nathan Armistead/ORNL, U.S. Dept. of Energy
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Original content