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Physicists Observe Maximal Entanglement in Strange Metal

6/17/2026

Summary

Story summary

Qimiao Si and Silke Paschen measured quantum entanglement in a quantum-critical strange metal and published in Nature Physics.
Spin quantum Fisher information peaked at the quantum critical point, confirming electron entanglement and was funded by U.S. Department of Energy, Air Force Office of Scientific Research, Welch Foundation and ONR Vannevar Bush Fellowship.
The authors propose that controlling entanglement could enable quantum information and spintronic technologies.

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Story summary

Qimiao Si and Silke Paschen measured quantum entanglement in a quantum-critical strange metal and published in Nature Physics.
Spin quantum Fisher information peaked at the quantum critical point, confirming electron entanglement and was funded by U.S. Department of Energy, Air Force Office of Scientific Research, Welch Foundation and ONR Vannevar Bush Fellowship.
The authors propose that controlling entanglement could enable quantum information and spintronic technologies.