SNR enhancement of magnetic fields measurement with the diamond NV center using a compound filter system

IF 3.3 2区物理与天体物理 Q2 OPTICS

Chinese Optics Letters Pub Date : 2023-01-01 DOI:10.3788/col202321.111201

An Ye, Dingyuan Fu, Mingming Wu, Jiahao Guo, Tianze Sheng, Xiaolin Li, Shangqing Gong, Yueping Niu

引用次数: 0

Abstract

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 and 14.76 dB at 500 mHz within 50 nT to 1100 nT. The introduction of this system in NV diamond magnetometry is aimed to improve signal quality by effectively eliminating the noise and retaining ideal signals.

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利用复合滤波系统对金刚石NV中心磁场进行信噪比增强测量

金刚石中的氮空位(NV)中心在室温磁场测量中越来越受到青睐。金刚石磁强计的信噪比优化通常侧重于信号幅度的增强，而不是有效的噪声处理。本文报道了一种结合小波去噪方法和自适应滤波器的复合滤波系统，用于实现高信噪比的高效弱磁测量。它可以增强磁场测量，在500 mHz至100 Hz范围内，在50 nT时平均信噪比提高17.80 dB，在50 nT至1100 nT范围内，在500 mHz时平均信噪比提高14.76 dB。在NV钻石磁强计中引入该系统旨在通过有效消除噪声和保留理想信号来提高信号质量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chinese Optics Letters 物理-光学

CiteScore

5.60

自引率

20.00%

发文量

180

审稿时长

2.3 months

期刊介绍： Chinese Optics Letters (COL) is an international journal aimed at the rapid dissemination of latest, important discoveries and inventions in all branches of optical science and technology. It is considered to be one of the most important journals in optics in China. It is collected by The Optical Society (OSA) Publishing Digital Library and also indexed by Science Citation Index (SCI), Engineering Index (EI), etc. COL is distinguished by its short review period (~30 days) and publication period (~100 days). With its debut in January 2003, COL is published monthly by Chinese Laser Press, and distributed by OSA outside of Chinese Mainland.