Fig. 4: Magnetometer sensitivity versus the projection parameter D. | Nature Communications

Fig. 4: Magnetometer sensitivity versus the projection parameter D.

From: Sub-Hertz resonance by weak measurement

Fig. 4

Different amounts of common-mode white intensity noise were added to the output intensities to mimic RAM. The magnetic field sensitivity is the average sensitivity in the frequency range between 12 and 22 Hz with a properly chosen D value to optimize the sensitivity. Experimental parameters: laser power of 15 µW. The test DC field we applied is 0.1 nT to assess the magnetometer sensitivity. The error bar is the standard deviation of five repetitive experiments.

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