A Fisher information framework for Rydberg EIT sensing of low-frequency fields proposes a DC-biased two-point differential method achieving ~10^{-4} V/m/sqrt(Hz) CRLB sensitivity, with cavity enhancement boosting Fisher information by over 100 times.
Optical magnetometry
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Sensing of Low-Frequency Electric Fields Using Rydberg EIT within the Fisher Information Framework
A Fisher information framework for Rydberg EIT sensing of low-frequency fields proposes a DC-biased two-point differential method achieving ~10^{-4} V/m/sqrt(Hz) CRLB sensitivity, with cavity enhancement boosting Fisher information by over 100 times.