Cavity-Enhanced Rydberg Atomic Superheterodyne Receiver
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arXiv
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| Auteurs principaux: | , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866913733452759040 |
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| author | Liang, Yukang Wang, Qinxia Wang, Zhihui Guan, Shijun Yang, Pengfei Zhang, Yuchi He, Jun Zhang, Pengfei Li, Gang Zhang, Tiancai |
| author_facet | Liang, Yukang Wang, Qinxia Wang, Zhihui Guan, Shijun Yang, Pengfei Zhang, Yuchi He, Jun Zhang, Pengfei Li, Gang Zhang, Tiancai |
| contents | High-sensitivity measurements of the microwave electric field are important in applications of communication and metrology. \replaced{The sensitivity of traditional Rydberg superheterodyne receivers in free space is effectively determined by the signal-to-noise ratio (SNR), which is often considered equivalent to sensitivity in practical sensing applications.}{The sensitivity of the traditional Rydberg superheterodyne receivers in free space is limited by signal-to-noise contrast.} In this work, we demonstrate a cavity-enhanced receiver, where an optical cavity significantly amplifies the interaction between the probe light and cesium atoms, which substantially improves the signal-to-noise ratio via enhancing the expansion coefficient \( κ\). \added{Here, $κ$ is the edge slope of the single peak obtained by fitting the double-peak EIT-AT spectrum, characterizing the response of the probe light to the frequency detuning of the coupling laser.}The sensitivity is thus boosted by a factor of approximately 19 dB. This study highlights the pivotal role of optical cavities in advancing Rydberg-based detection systems, offering a promising approach for high-sensitivity microwave electric field measurements. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_20792 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Cavity-Enhanced Rydberg Atomic Superheterodyne Receiver Liang, Yukang Wang, Qinxia Wang, Zhihui Guan, Shijun Yang, Pengfei Zhang, Yuchi He, Jun Zhang, Pengfei Li, Gang Zhang, Tiancai Quantum Physics Atomic Physics High-sensitivity measurements of the microwave electric field are important in applications of communication and metrology. \replaced{The sensitivity of traditional Rydberg superheterodyne receivers in free space is effectively determined by the signal-to-noise ratio (SNR), which is often considered equivalent to sensitivity in practical sensing applications.}{The sensitivity of the traditional Rydberg superheterodyne receivers in free space is limited by signal-to-noise contrast.} In this work, we demonstrate a cavity-enhanced receiver, where an optical cavity significantly amplifies the interaction between the probe light and cesium atoms, which substantially improves the signal-to-noise ratio via enhancing the expansion coefficient \( κ\). \added{Here, $κ$ is the edge slope of the single peak obtained by fitting the double-peak EIT-AT spectrum, characterizing the response of the probe light to the frequency detuning of the coupling laser.}The sensitivity is thus boosted by a factor of approximately 19 dB. This study highlights the pivotal role of optical cavities in advancing Rydberg-based detection systems, offering a promising approach for high-sensitivity microwave electric field measurements. |
| title | Cavity-Enhanced Rydberg Atomic Superheterodyne Receiver |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2502.20792 |