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arXiv · 2203.04178

High efficiency coherent microwave-to-optics conversion via off-resonant scattering

Hai-Tao Tu·Kai-Yu Liao·Zuan-Xian Zhang·Xiao-Hong Liu·Shun-Yuan Zheng·Shu-Zhe Yang·Xin-Ding Zhang·Hui Yan·Shi-Liang Zhu
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Abstract

Quantum transducers that can convert quantum signals from the microwave to the optical domain are a crucial optical interface for quantum information technology. Coherent microwave-to-optics conversions have been realized with various physical platforms, but all of them are limited to low efficiencies of less than 50\%, the threshold of the no-cloning quantum regime. Here we report a coherent microwave-to-optics transduction using Rydberg atoms and off-resonant scattering technique with an efficiency of $82\pm 2\%$ and a bandwidth of about 1 MHz. The high conversion efficiency is maintained for microwave photons range from thousands to about 50, suggesting that our transduction is readily applicable to the single-photon level. Without requiring cavities or aggressive cooling to quantum ground states, our results would push atomic transducers closer to practical applications in quantum technologies.

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quant-phphysics.atom-phphysics.optics

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BibTeXRIS

Hai-Tao Tu, Kai-Yu Liao, Zuan-Xian Zhang, Xiao-Hong Liu, Shun-Yuan Zheng, Shu-Zhe Yang, Xin-Ding Zhang, Hui Yan, Shi-Liang Zhu. 2022-03-08. High efficiency coherent microwave-to-optics conversion via off-resonant scattering. https://doi.org/10.1038/s41566-022-00959-3

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