Table 1 Sensitivity of a NV-based sensor for high-frequency signals

From: Quantum sensing of weak radio-frequency signals by pulsed Mollow absorption spectroscopy

 

Single NV, 300 K

Single NV, < 77 K, 12C, SSR

NV Ensemble, 300 K

T 2

1 ms21

10 ms19

100 µs

\(T_2^*\)

2 µs

100 µs36

100 ns37

#Pulses

> 50019

> 10019

100019

#NV

1

1

1011 38

Spin detection efficiency σ

0.1%21

100%39

0.1%21

Sensitivity η

5 nT/\(\sqrt {{\rm{Hz}}} \) 40

50 pT/\(\sqrt {{\rm{Hz}}} \)

1 pT/\(\sqrt {{\rm{Hz}}} \) 38

  1. < 77 K refers to cryogenic conditions, 12C to isotopically pure diamond, and SSR to single shot readout. Sensitivities have been estimated as \(\eta = 1{\rm{/}}\left[ {2\pi \gamma } \right.\sqrt {\left. {\sigma {T_2}{N_{{\rm{NV}}}}} \right]} \) where γ denotes the gyromagnetic ratio, σ the spin detection efficiency and N NV the number of NV centers. References refer to published values for the respective parameter. Parameters without reference are computed from the others or have been measured in this work.
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