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arXiv · 2409.15249

Tutorial: Extracting entanglement signatures from neutron spectroscopy

Allen Scheie·Pontus Laurell·Wolfgang Simeth·Elbio Dagotto·D. Alan Tennant
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Abstract

This tutorial is a pedagogical introduction to recent methods of computing quantum spin entanglement witnesses from spectroscopy, with a special focus on neutron scattering on quantum spin systems. We offer a brief introduction to the concepts and equations, define a data analysis protocol, and discuss the interpretation of three entanglement witnesses: one-tangle, two-tangle, and Quantum Fisher Information. We also discuss practical experimental considerations, and give three examples of extracting entanglement witnesses from experimental data: Copper Nitrate, KCuF3, and NiPS3.

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Allen Scheie, Pontus Laurell, Wolfgang Simeth, Elbio Dagotto, D. Alan Tennant. 2024-09-23. Tutorial: Extracting entanglement signatures from neutron spectroscopy. https://doi.org/10.1016/j.mtquan.2024.100020

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