| Autor: |
George Mathew, Saulo L. L. Silva, Anil Jain, Arya Mohan, D. T. Adroja, V. G. Sakai, C. V. Tomy, Alok Banerjee, Rajendar Goreti, Aswathi V. N., Ranjit Singh, D. Jaiswal-Nagar |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Physical Review Research, Vol 2, Iss 4, p 043329 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2643-1564 |
| DOI: |
10.1103/PhysRevResearch.2.043329 |
| Popis: |
Quantum entanglement is a quantum-mechanical phenomenon where the quantum state of a many-body system with many degrees of freedom cannot be described independently of the state of each body with a given degree of freedom, no matter how far apart in space each body is. Entanglement is not only considered a resource in quantum information but is also believed to affect complex condensed-matter systems. Detecting and quantifying multiparticle entanglement in a many-body system is thus of fundamental significance for both quantum information science and condensed-matter physics. Here, we detect and quantify multipartite entanglement in a spin-1/2 Heisenberg antiferromagnetic chain in a bulk solid. Multipartite entanglement was detected by using quantum Fisher information which was obtained using dynamic susceptibility measured via inelastic neutron scattering. The scaling behavior of quantum Fisher information was found to identify the spin-1/2 Heisenberg antiferromagnetic chain to belong to a class of strongly entangled quantum phase transitions with divergent multipartite entanglement. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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