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Acoustic Coupling between Magnon Bose−Einstein Condensates in Yttrium Iron Garnet Films

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The excitation of a magnon Bose−Einstein condensate in an yttrium iron garnet film due to acoustic coupling with the condensate in the second sample is experimentally studied. A nonlinear nature of this excitation is demonstrated. The formation of a phonon Bose−Einstein condensate in the substrate is assumed. This experiment opens the possibility of creating qubits based on acoustically interacting Bose−Einstein condensates.

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Funding

This work was supported by the Russian Science Foundation (project no. 22-12-00322). The samples studied in this work were prepared at Vernadsky Crimean Federal University under the support of the Russian Ministry of Science and Higher Education (megagrant no. 075-15-2022-1108).

Author information

Authors and Affiliations

  1. Russian Quantum Center, 121205, Skolkovo, Moscow, Russia

    G. A. Knyazev, A. N. Kuzmichev, P. E. Petrov, P. M. Vetoshko, V. I. Belotelov & Yu. M. Bunkov

  2. Moscow State University, 119992, Moscow, Russia

    G. A. Knyazev, P. E. Petrov & V. I. Belotelov

  3. Vernadsky Crimean Federal University, 295007, Simferopol, Russia

    P. M. Vetoshko & V. I. Belotelov

  4. Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, 125009, Moscow, Russia

    P. M. Vetoshko

Authors
  1. G. A. Knyazev
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  2. A. N. Kuzmichev
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  3. P. E. Petrov
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  4. P. M. Vetoshko
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  5. V. I. Belotelov
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  6. Yu. M. Bunkov
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Correspondence to Yu. M. Bunkov.

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Translated by K. Kugel

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Knyazev, G.A., Kuzmichev, A.N., Petrov, P.E. et al. Acoustic Coupling between Magnon Bose−Einstein Condensates in Yttrium Iron Garnet Films. Jetp Lett. 118, 603–607 (2023). https://doi.org/10.1134/S0021364023602944

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  • DOI: https://doi.org/10.1134/S0021364023602944

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