集群金刚石NV色心量子自旋定向激发磁传感增强方法  

Magnetic Sensing Enhancement Method in Ensemble Diamond NV Centers with Quantum Spin Directional Excitation

作　　者：张扬 刘燕杰 郝文渊 温焕飞 唐军[1,2] 刘俊 Zhang Yang;Liu Yanjie;Hao Wenyuan;Wen Huanfei;Tang Jun;Liu Jun(Key Laboratory of Instrumentation Science and Dynamic Measurement of Ministry of Education,North University of China,Taiyuan 030051,China;School of Instrument and Electronics,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,太原030051 [2]中北大学仪器与电子学院,太原030051

出　　处：《微纳电子技术》2023年第2期280-285,共6页Micronanoelectronic Technology

基　　金：国家自然科学基金(51635011,51922009);国家重大科研仪器设备研制专项(51727808,61727804);山西省应用基础研究计划项目(201901D101011(ZD),201901D211254,201801D221202,201801D221213);山西省高等学校科技创新项目(2019L0558);山西省量子传感与精密测量重点实验室(201905D121001);山西省“1331工程”重点学科建设计划项目。

摘　　要：为满足工业磁传感器高灵敏度、高信噪比(SNR)测量需求,基于自制的共聚焦磁检测系统,提出一种基于脉冲幅度调制技术的集群金刚石氮空位(NV)色心量子自旋定向激发(QSDE)方法。利用任意波形发生器构建sin型QSDE脉冲光探测磁共振序列,抑制传感体系中对微波敏感的Ns杂质与NV色心产生耦合效应带来的线宽展宽与噪声,提升谱线对比度的同时降低了线宽与噪声,突破微波强度对灵敏度和SNR的限制。经实验验证,相较连续波光探测磁共振(CW-ODMR)方法,该方法可将磁传感灵敏度和信噪比分别大约提升5倍和20 dB,为量子精密测量领域开辟了全新的技术路径和研究思路。To meet the needs of high sensitivity and high signal-to-noise ratio(SNR)measurement of industrial magnetic sensors,an ensemble diamond nitrogen vacancy(NV)center quantum spin directional excitation(QSDE)method based on pulse amplitude modulation technology was proposed.By using an arbitrary waveform generator,A sin-type QSDE pulse optical detection magnetic resonance sequence was constructed to suppress the line width broadening and noise caused by the coupling effect between microwave sensitive Ns impurities and NV center in the sensing system.The spectral line contrast is improved,meanwhile the line width and noise are reduced,eventually the limitation of microwave intensity on sensitivity and SNR is broken through.The experiment results show that compared with the continuous wave optical detection magnetic resonance(CW-ODMR)method,the method can improve the magnetic sensing sensitivity and SNR by about 5 times and about 20 dB respectively,opening up a new technical path and research idea for the field of quantum precision measurement.

关 键 词：金刚石 氮空位(NV)色心 磁传感 量子精密测量 光探测磁共振(ODMR) 脉冲调制 量子自旋定向激发 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TM936[自动化与计算机技术—控制科学与工程]