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arXiv · 1911.04728

Coherent pumping of high momentum magnons by light

Fran Šimić·Sanchar Sharma·Yaroslav M. Blanter·Gerrit E. W. Bauer
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Abstract

We propose to excite a large number of coherent magnons with high momentum in optical cavities. This is achieved by two counterpropagating optical modes that are detuned by the frequency of a selected magnon, similar to stimulated Raman scattering. In sub-mm size yttrium iron garnet spheres, a mW laser input power generates 10^6-10^8 coherent magnons. The large magnon population enhances Brillouin light scattering, a probe suitable to access their quantum properties.

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Fran Šimić, Sanchar Sharma, Yaroslav M. Blanter, Gerrit E. W. Bauer. 2019-11-12. Coherent pumping of high momentum magnons by light. https://doi.org/10.1103/physrevb.101.100401

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