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arXiv · 1704.08146

Control of entanglement transitions in quantum spin clusters

Hannah R. Irons·Jorge Quintanilla·Toby G. Perring·Luigi Amico·Gabriel Aeppli
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Abstract

Clustered quantum materials provide a new platform for the experimental study of many-body entanglement. Here we address a simple model of a single-molecule nano-magnet featuring N interacting spins in a transverse field. The field can induce an entanglement transition (ET). We calculate the magnetisation, low-energy gap and neutron-scattering cross-section and find that the ET has distinct signatures, detectable at temperatures as high as 5% of the interaction strength. The signatures are stronger for smaller clusters.

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Hannah R. Irons, Jorge Quintanilla, Toby G. Perring, Luigi Amico, Gabriel Aeppli. 2017-11-10. Control of entanglement transitions in quantum spin clusters. https://doi.org/10.1103/physrevb.96.224408

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