Nitrogen-vacancy(NV)centers in diamond are progressively favored for room-temperature magnetic field measurement.The signal to noise ratio(SNR)optimization for NV diamond magnetometry generally concentrates on signal ...Nitrogen-vacancy(NV)centers in diamond are progressively favored for room-temperature magnetic field measurement.The signal to noise ratio(SNR)optimization for NV diamond magnetometry generally concentrates on signal amplitude enhancement rather than efficient noise processing.Here,we report a compound filter system combining a wavelet denoising method and an adaptive filter for the realization of an efficient weak magnetic measurement with a high SNR.It allows enhanced magnetic field measurement with an average SNR enhancement of 17.80 dB at 50 nT within 500 mHz to 100 Hz and14.76 dB at 500 mHz within 50 n T to 1100 n T.The introduction of this system in NV diamond magnetometry is aimed to improve signal quality by effectively eliminating the noise and retaining ideal signals.展开更多
基金supported by the National Natural Science Foundation of China(Nos.61835013,12034007,11874146,12274123)Natural Science Foundation of Shanghai(No.20ZR1414300)。
文摘Nitrogen-vacancy(NV)centers in diamond are progressively favored for room-temperature magnetic field measurement.The signal to noise ratio(SNR)optimization for NV diamond magnetometry generally concentrates on signal amplitude enhancement rather than efficient noise processing.Here,we report a compound filter system combining a wavelet denoising method and an adaptive filter for the realization of an efficient weak magnetic measurement with a high SNR.It allows enhanced magnetic field measurement with an average SNR enhancement of 17.80 dB at 50 nT within 500 mHz to 100 Hz and14.76 dB at 500 mHz within 50 n T to 1100 n T.The introduction of this system in NV diamond magnetometry is aimed to improve signal quality by effectively eliminating the noise and retaining ideal signals.
