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

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Abstract

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.

About the authors

G. A. Knyazev

Russian Quantum Center;Moscow State University

Email: y.bunkov@rqc.ru
121205, Skolkovo, Moscow, Russia;119992, Moscow, Russia

A. N. Kuzmichev

Russian Quantum Center

Email: y.bunkov@rqc.ru
121205, Skolkovo, Moscow, Russia

P. E. Petrov

Russian Quantum Center;Moscow State University

Email: y.bunkov@rqc.ru
121205, Skolkovo, Moscow, Russia;119992, Moscow, Russia

P. M. Vetoshko

Russian Quantum Center;Vernadsky Crimean Federal University;Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences

Email: y.bunkov@rqc.ru
121205, Skolkovo, Moscow, Russia;295007, Simferopol, Russia;125009, Moscow, Russia

V. I. Belotelov

Russian Quantum Center; Moscow State University;Vernadsky Crimean Federal University

Email: y.bunkov@rqc.ru
121205, Skolkovo, Moscow, Russia;119992, Moscow, Russia;295007, Simferopol, Russia

Yu. M. Bun'kov

Russian Quantum Center

Author for correspondence.
Email: y.bunkov@rqc.ru
121205, Skolkovo, Moscow, Russia

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