Supporting information for JUSTC-2022-0150

ISSN 0253-2778

CN 34-1054/N

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Supporting information for JUSTC-2022-0150

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Supporting information for JUSTC-2022-0150

2023, 53(7): 0701.

Temperature-robust diamond magnetometry based on the double-transition method .

Figures of the Article

The level structure of NV center in diamond and the setup of temperature-robust diamond magnetometry based on the double-transition method. (a) Energy-level diagram for the NV center. The external magnetic field $B_z$ applied along the NV symmetry axis lifts the degeneracy of $|m_{\rm{s}}=\pm1\rangle$ sublevels with a Zeeman shift. (b) The schematic of experimental setup. The green and red arrows represent for the 532 nm laser and fluorescence. A few of components used in the experimental setup like the coil for applying bias magnetic field are not shown in the figure.
The simulation results of magnetometry signal drifts $\delta S$ as the function of zero-field splitting variation $\delta D$ for the single-transition and double-transition magnetometry. For the double-transition magnetometry, the normalized $\delta S$ is immune to $\delta D$ .
The measured magnetometry signal drifts $\delta S$ as the function of zero-field splitting variation $\delta D$ for the single-transition and double-transition magnetometry. Each data point was acquired for 5 s and averaged. The error bars are smaller than the data points.
Comparison between the single-transition and double-transition magnetometry working under significant temperature drifts. (a) and (b) Time domain temperature drifts $\delta T$ and magnetic field measurement result drifts $\delta B_{\rm mea}$ of the two types of magnetometry.

ISSN 0253-2778

CN 34-1054/N

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