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Physicists Observe Nine-Partite Quantum Entanglement in Crystal

6/18/2026

Summary

Story summary

Physicists led by Prof. Silke Bühler-Paschen at TU Wien detected quantum entanglement in a centimeter-sized crystal of Ce3Pd20Si6.
They used inelastic neutron scattering at the Institut Laue-Langevin and cooled the sample to 60 mK.
At 1.73 tesla the quantum Fisher information density reached 8.2 ± 0.9, indicating at least nine-partite entanglement.
Quantum Monte Carlo simulations of a Kondo-destruction transition reproduced the scale-free QFI rise, supporting multipartite entanglement as a feature of strange metals.

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Story summary

Physicists led by Prof. Silke Bühler-Paschen at TU Wien detected quantum entanglement in a centimeter-sized crystal of Ce3Pd20Si6.
They used inelastic neutron scattering at the Institut Laue-Langevin and cooled the sample to 60 mK.
At 1.73 tesla the quantum Fisher information density reached 8.2 ± 0.9, indicating at least nine-partite entanglement.
Quantum Monte Carlo simulations of a Kondo-destruction transition reproduced the scale-free QFI rise, supporting multipartite entanglement as a feature of strange metals.