Hierarchy of magnon mode entanglement in antiferromagnetsShow others and affiliations
2020 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 102, no 22, article id 224418Article in journal (Refereed) Published
Abstract [en]
Continuous variable entanglement between magnon modes in Heisenberg antiferromagnets with Dzyaloshinskii-Moriya (DM) interaction is examined. Different bosonic modes are identified, which allows us to establish a hierarchy of magnon entanglement. We argue that entanglement between magnon modes is determined by a simple lattice-specific parameter, together with the ratio of the strengths of the DM and Heisenberg exchange interactions, and that magnon entanglement can be detected by means of quantum homodyne techniques. As an illustration of the relevance of our findings for possible entanglement experiments in the solid state, a typical antiferromagnet with the perovskite crystal structure is considered, and it is shown that long wave length magnon modes have a maximal degree of entanglement.
Place, publisher, year, edition, pages
American Physical Society , 2020. Vol. 102, no 22, article id 224418
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:oru:diva-88771DOI: 10.1103/PhysRevB.102.224418ISI: 000599092300006Scopus ID: 2-s2.0-85098173495OAI: oai:DiVA.org:oru-88771DiVA, id: diva2:1521099
Funder
Knut and Alice Wallenberg Foundation, 2018.0060Swedish Research Council, 2017-03832 2015-04608 2016-05980 2019-05304 2019-03666eSSENCE - An eScience Collaboration
Note
Funding Agencies:
IPM 98810042
Russian Science Foundation (RSF) 18-12-00185
2021-01-222021-01-222021-01-22Bibliographically approved