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

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 measu...     

固态量子精密测量教学实验系统与课程设计

为培养学生的创新意识和动手能力，建立了基于金刚石氮-空穴色心的固态量子精密测量教学实验系统，采用单芯片级别的微波源和基于开源硬件的时序控制和数据采集系统，可节省成本且保留扩展升级能力.同时介绍了相关的教学思路和教学设计，该课程采用层进式和启发式教学，提供了从原理、实验、思考到讨论的系统性教学内容.