1. Control of entanglement transitions in quantum spin clusters
- Author
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Luigi Amico, Jorge Quintanilla, Gabriel Aeppli, Toby Perring, and Hannah R. Irons
- Subjects
Field (physics) ,FOS: Physical sciences ,02 engineering and technology ,Quantum entanglement ,01 natural sciences ,Magnetization ,Condensed Matter - Strongly Correlated Electrons ,Quantum mechanics ,Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ,0103 physical sciences ,Electronic ,Optical and Magnetic Materials ,Singlet state ,010306 general physics ,Amplitude damping channel ,QC ,QC176.8.N35 ,Electronic, Optical and Magnetic Materials ,Condensed Matter Physics ,Physics ,Quantum discord ,Quantum Physics ,Strongly Correlated Electrons (cond-mat.str-el) ,Spins ,Condensed matter physics ,Condensed Matter - Mesoscale and Nanoscale Physics ,021001 nanoscience & nanotechnology ,QC174.12 ,11000/12 ,11000/11 ,W state ,Quantum Physics (quant-ph) ,0210 nano-technology - 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., 14 pages, 11 Figures; minor changes; Phys. Rev. B (accepted)
- Published
- 2017