ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Thermal evolution of multipartite entanglement in a spin ½ antiferromagnetic Heisenberg chain system C14D18CuN4O10 via inelastic neutron scattering
Abstract: Fisher information has been proposed to be a witness of m-particle multipartite entanglement and realized experimentally very recently via inelastic neutron scattering. The ground state of a spin ½ Heisenberg antiferromagnetic chain is a Tomonaga-Luttinger liquid (TLL) where quantum mechanical fluctuations do not allow for long range order even at T = 0 K. The excitation spectra of the TLL is gapless comprising spin ½ interacting fermions known as spinons. C14D18CuN4O10 has been shown to be an excellent realization of a TLL with an exchange coupling constant J/kB = 1.23 K. Through inelastic neutron scattering measurements done at different temperatures, we want to calculate the thermal evolution of the spinon spectra of C14D18CuN4O10 over the entire Brillouin zone. Using this, we want to observe the thermal evolution of multipartite entanglement via Fisher information and check the limit of multipartite entanglement to understand if exchange coupling constant protects thermal decoherence of the system. Consequently, entanglement teleportation fidelity temperature of the system will be estimated.
Local Contact: Dr Christian Balz
Experimenter: Mr Sharath Kumar Chanarayappa
Experimenter: Dr Deepshikha Jaiswal Nagar
Experimenter: Dr Devashi Adroja
Experimenter: Ms Athira Suresh
DOI: 10.5286/ISIS.E.RB2310090
ISIS Experiment Number: RB2310090
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2310090-1 | LET | 25 September 2026 | Download |
Publisher: STFC ISIS Neutron and Muon Source
Data format: RAW/Nexus
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Data Citation
The recommended format for citing this dataset in a research
publication is as:
[author], [date], [title], [publisher],
[doi]
For Example:
Dr Christian Balz et al; (2023): Thermal evolution of multipartite entanglement in a spin ½ antiferromagnetic Heisenberg chain system C14D18CuN4O10 via inelastic neutron scattering, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2310090
Data is released under the CC-BY-4.0 license.
