September 26, 2022

Researchers find billions of quantum entangled electrons in a metal

Researchers find billions of quantum entangled electrons in a metal Schematic of the four-qubit quantum processor made using semiconductor manufacturing technology. credit Marieke de Lorijn for QuTech.

Physicists at Rice University and Vienna University of Technology (TU Wien) have observed quantum entanglement among “billions of billions” of flowing electrons in a quantum critical material, a strange metal compound of ytterbium, rhodium and silicon.

TU Wien researchers developed a highly complex materials synthesis technique to produce ultrapure films containing one part ytterbium for every two parts rhodium and silicon (YbRh2Si2). At absolute zero temperature, the material undergoes a transition from one quantum phase that forms a magnetic order to another that does not.

Quantum criticality may lead to a platform for both quantum information and high-temperature superconductivity. The paper is published in Science. (Phys.org)

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