Layered crystal CrSBr converts microwaves into light
Researchers reported in Nature Materials that the layered antiferromagnet CrSBr converts microwave signals into light. The conversion relies on magnon-exciton coupling: microwaves excite vibrations in the crystal’s magnetic lattice, which alters the excitonic response and generates optical sidebands. The effect was observed over a roughly 300 megahertz bandwidth, even without a resonant cavity. The team suggests the approach could serve as a scalable, cavity-free link between microwave-based quantum devices and optical fibers.
Engineers designing quantum networks now have a cavity-free method to connect microwave-frequency components with optical links.
Source: Microwave-to-optical transduction using magnon–exciton coupling - Nature Materials (nature.com).
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