Science Advances

Supplementary Materials

This PDF file includes:

  • Fig. S1. Emission and absorption spectrum for GeV, SiV, and NV centers.
  • Fig. S2. One- and two-photon absorption fit of the fluorescence signal measured for GeV emitters as a function of input power.
  • Fig. S3. Temperature dependence of PL intensity signal from SiV centers upon anti-Stokes excitation.
  • Fig. S4. Summary of some of the physical and optical properties of the nanodiamond sample used in this study.
  • Fig. S5. Overview of the variation with temperature of the PL intensity under Stokes and anti-Stokes excitation.
  • Fig. S6. Confocal maps of a 20 μm × 20 μm showing the PL signal from isolated nanodiamonds containing many GeV centers.

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