Optical registration of a coherent magnon state outside of the excitation region

Авторы: Petrov P.E., Kapralov P.O., Knyazev G.A., Kuzmichev A.N., Vetoshko P.M., Belotelov V.I., Bunkov Yu M.
Журнал: Optics Express
Том: 31
Номер: 5
Год издания: 2023
Издательство: Optical Society of America
Местоположение издательства: United States
Первая страница: 8335
Последняя страница: 8341
DOI: 10.1364/oe.481977
Аннотация: Magnons have demonstrated enormous potential for the next generation of information technology and quantum computing. In particular, the coherent state of magnons resulting from their Bose-Einstein condensation (mBEC) is of great interest. Typically, mBEC is formed in the magnon excitation region. Here we demonstrate for the first time by optical methods the permanent existence of mBEC at large distances from the magnon excitation region. The homogeneity of the mBEC phase is also demonstrated. The experiments were carried out on films of yttrium iron garnet magnetized perpendicular to the surface and at room temperature. We use the method described in this article to develop coherent magnonics and quantum logic devices.
Добавил в систему: Князев Григорий Алексеевич

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