Figure 5
From: Dynamical sensitivity control of a single-spin quantum sensor
High-resolution DYSCO noise spectrum of 13C nuclear spin bath. (a) The spin noise spectrum of the 13C nuclear spin bath shows distinctly the carbon Larmor frequency in a wide range without any harmonics. (b) The 13C noise spectrum together with 100 kHz noise signal showing no undesired responses. (c) Finer resolved spectrum with a resolution of 5 kHz showing signatures of 13C spins being weakly coupled to the NV spin with a strength of 60 kHz.
