Original paper
Witnessing entanglement in quantum magnets using neutron scattering
Abstract
We demonstrate how quantum entanglement can be directly witnessed in the quasi-1D Heisenberg antiferromagnet KCuF_3 We apply three entanglement witnesses --- one-tangle, two-tangle, and quantum Fisher information --- to its inelastic neutron spectrum, and compare with spectra simulated by finite-temperature density matrix renormalization group (DMRG) and classical Monte Carlo methods. We find that each witness provides direct access to...
Paper Details
Title
Witnessing entanglement in quantum magnets using neutron scattering
Published Date
Jun 28, 2021
Volume
103
Issue
22
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