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Tunable phonon-driven magnon-magnon entanglement at room temperature
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- Liu, Yuefei (author)
- KTH,Tillämpad fysik,AlbaNova Univ Ctr, KTH Royal Inst Technol, Sch Engn Sci, Dept Appl Phys, SE-10691 Stockholm, Sweden.
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- Bergman, Anders, 1978- (author)
- Uppsala universitet,Materialteori
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- Bagrov, Andrey (author)
- Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands,Radboud Univ Nijmegen, Inst Mol & Mat, Heyendaalseweg 135, NL-6525AJ Nijmegen, Netherlands.
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- (creator_code:org_t)
- IOP Publishing Ltd, 2023
- 2023
- English.
- In: New Journal of Physics. - : IOP Publishing Ltd. - 1367-2630. ; 25:11
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- magnon
- phonon
- steady-state
- quantum entanglement
- room temperature
Publication and Content Type
- ref (subject category)
- art (subject category)
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