Fisher-Based Sensitivity Framework for Rydberg Atom Microwave Electrometry
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866910038354821120 |
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| author | Liu, Chen-Rong Tao, Runxia Lv, Xiang Dong, Ying Li, Chuang Wei, Binbin Zhou, Mingti |
| author_facet | Liu, Chen-Rong Tao, Runxia Lv, Xiang Dong, Ying Li, Chuang Wei, Binbin Zhou, Mingti |
| contents | Fisher information provides a rigorous theoretical benchmark for evaluating quantum sensor sensitivity; however, a comprehensive framework for quantifying the fundamental limits of Rydberg-atom microwave electrometers remains lacking. In this work, we establish such a framework by deriving the Fisher information for slope detection and establishing its connection to sensitivity through signal-to-noise ratio, leading to an analytical expression jointly determined by photon shot noise and atomic response. Numerical implementation with real parameters in cesium vapor systems reveals a Fisher-optimized sensitivity below $\mathrm{nV\,cm^{-1}\,Hz^{-1/2}}$, highlighting a substantial potential for sensitivity enhancement in practical experiments through the suppression of technical noise. Importantly, the theory predicts that sub-nanovolt sensitivity is robust against moderate variations in system parameters, thereby delineating both the ultimate sensitivity and optimal operational regime of Rydberg-atom microwave electrometers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_12007 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Fisher-Based Sensitivity Framework for Rydberg Atom Microwave Electrometry Liu, Chen-Rong Tao, Runxia Lv, Xiang Dong, Ying Li, Chuang Wei, Binbin Zhou, Mingti Optics Atomic Physics Fisher information provides a rigorous theoretical benchmark for evaluating quantum sensor sensitivity; however, a comprehensive framework for quantifying the fundamental limits of Rydberg-atom microwave electrometers remains lacking. In this work, we establish such a framework by deriving the Fisher information for slope detection and establishing its connection to sensitivity through signal-to-noise ratio, leading to an analytical expression jointly determined by photon shot noise and atomic response. Numerical implementation with real parameters in cesium vapor systems reveals a Fisher-optimized sensitivity below $\mathrm{nV\,cm^{-1}\,Hz^{-1/2}}$, highlighting a substantial potential for sensitivity enhancement in practical experiments through the suppression of technical noise. Importantly, the theory predicts that sub-nanovolt sensitivity is robust against moderate variations in system parameters, thereby delineating both the ultimate sensitivity and optimal operational regime of Rydberg-atom microwave electrometers. |
| title | Fisher-Based Sensitivity Framework for Rydberg Atom Microwave Electrometry |
| topic | Optics Atomic Physics |
| url | https://arxiv.org/abs/2503.12007 |