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

• URL: http://arxiv.org/abs/2203.04178v1
• Date: Tue, 8 Mar 2022 16:09:12 GMT
• Title: High efficiency coherent microwave-to-optics conversion via off-resonant scattering
• Authors: 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
• Abstract summary: We report a coherent microwave-to-optics transduction using Rydberg atoms and off-resonant scattering technique. The high conversion efficiency is maintained for microwave photons range from thousands to about 50.
• Score: 5.639495736553396
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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