Broadband Heterodyne Microwave Detection using Rydberg Atoms with High Sensitivity
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866915757666861056 |
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| author | Su, Hsuan-Jui Fang, Shao-Cheng Li, Ting-An Chang, Chen-Hao Chen, Yu-Chi Chen, Yi-Hsin |
| author_facet | Su, Hsuan-Jui Fang, Shao-Cheng Li, Ting-An Chang, Chen-Hao Chen, Yu-Chi Chen, Yi-Hsin |
| contents | We present a Rydberg atom-based microwave electric field sensor that achieves extended dynamic range and enhanced sensitivity across a broad bandwidth. By characterizing the Autler-Townes (AT) splitting induced by a single-tone microwave field, we demonstrate a spectroscopic method that simultaneously extracts both the microwave frequency and electric field strength directly from the splitting pattern. We implement dual-tone heterodyne detection, achieving a minimum detectable field strength on the order of uV/cm and a sensitivity in the sub-uV/cm/Hz^1/2 regime, while extending the operational bandwidth up to 3 GHz. Through systematic characterization of frequency and power dependencies, we identify optimal operating conditions to minimize power broadening in the resonant AT regime and maximize sensitivity in the far-off-resonance AC Stark regime. The resulting platform combines high sensitivity, broad bandwidth, and a dynamic range of approximately 90 dB, establishing Rydberg atoms as practical sensors for precision electric field metrology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_19305 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Broadband Heterodyne Microwave Detection using Rydberg Atoms with High Sensitivity Su, Hsuan-Jui Fang, Shao-Cheng Li, Ting-An Chang, Chen-Hao Chen, Yu-Chi Chen, Yi-Hsin Atomic Physics Quantum Physics We present a Rydberg atom-based microwave electric field sensor that achieves extended dynamic range and enhanced sensitivity across a broad bandwidth. By characterizing the Autler-Townes (AT) splitting induced by a single-tone microwave field, we demonstrate a spectroscopic method that simultaneously extracts both the microwave frequency and electric field strength directly from the splitting pattern. We implement dual-tone heterodyne detection, achieving a minimum detectable field strength on the order of uV/cm and a sensitivity in the sub-uV/cm/Hz^1/2 regime, while extending the operational bandwidth up to 3 GHz. Through systematic characterization of frequency and power dependencies, we identify optimal operating conditions to minimize power broadening in the resonant AT regime and maximize sensitivity in the far-off-resonance AC Stark regime. The resulting platform combines high sensitivity, broad bandwidth, and a dynamic range of approximately 90 dB, establishing Rydberg atoms as practical sensors for precision electric field metrology. |
| title | Broadband Heterodyne Microwave Detection using Rydberg Atoms with High Sensitivity |
| topic | Atomic Physics Quantum Physics |
| url | https://arxiv.org/abs/2601.19305 |