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Tunable phonon-driven magnon-magnon entanglement at room temperature
Department of Applied Physics, School of Engineering Sciences, KTH Royal Institute of Technology, AlbaNova University Center, Stockholm, Sweden.
Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden.
Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands.
Department of Applied Physics, School of Engineering Sciences, KTH Royal Institute of Technology, AlbaNova University Center, Stockholm, Sweden; Swedish e-Science Research Center (SeRC), KTH Royal Institute of Technology, Stockholm, Sweden.
Vise andre og tillknytning
2023 (engelsk)Inngår i: New Journal of Physics, E-ISSN 1367-2630, Vol. 25, nr 11, artikkel-id 113032Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We report the existence of entangled steady-states in bipartite quantum magnonic systems at elevated temperatures. We consider dissipative dynamics of two magnon modes in a bipartite antiferromagnet, subjected to interaction with a phonon mode and an external rotating magnetic field. To quantify the bipartite magnon-magnon entanglement, we use entanglement negativity and compute its dependence on temperature and magnetic field. We provide evidence that the coupling between magnon and phonon modes is necessary for the entanglement, and that, for any given phonon frequency and magnon-phonon coupling rate, there are always ranges of the magnetic field amplitudes and frequencies for which magnon-magnon entanglement persists at room temperature.
sted, utgiver, år, opplag, sider
IOP Publishing Ltd , 2023. Vol. 25, nr 11, artikkel-id 113032
Emneord [en]
magnon, phonon, steady-state, quantum entanglement, room temperature
HSV kategori
Identifikatorer
URN: urn:nbn:se:oru:diva-110045DOI: 10.1088/1367-2630/ad0b20ISI: 001104537600001Scopus ID: 2-s2.0-85178149802OAI: oai:DiVA.org:oru-110045DiVA, id: diva2:1817722
Forskningsfinansiär
Knut and Alice Wallenberg Foundation, 2018.0060 2021.0246eSSENCE - An eScience CollaborationSwedish Research Council, 2019-05304 2016-05980 2019-03666 2017-03832Swedish Foundation for Strategic ResearchStandUp
Merknad

The authors acknowledge financial support from the Knut and Alice Wallenberg Foundation through Grants No. 2018.0060 and No. 2021.0246. A Bergman and O E acknowledges eSSENCE. A D acknowledges financial support from the Swedish Research Council (VR) through Grants No. 2019-05304 and 2016-05980. O E acknowledges support by the Swedish Research Council (VR), the Foundation for Strategic Research (SSF), the European Research Council (854843-FASTCORR) and STandUP. D T acknowledges support from the Swedish Research Council (VR) with Grant No. 2019-03666. Y L acknowledges financial support from the KTH-CSC scholarship agreement (No. 201907090094). E S acknowledges financial support from the Swedish Research Council (VR) through Grant No. 2017-03832.

Tilgjengelig fra: 2023-12-07 Laget: 2023-12-07 Sist oppdatert: 2024-02-05bibliografisk kontrollert

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