论文标题
使用双双量子驱动钻石缺陷合奏的宽视野动态磁显微镜
Wide-field dynamic magnetic microscopy using double-double quantum driving of a diamond defect ensemble
论文作者
论文摘要
可以通过成像钻石氮空位（NV）中心集合的光学检测磁共振来实现广场磁力测定法。但是，NV集合不均匀性显着限制了这些测量值的磁场灵敏度。我们展示了双双量子（DDQ）驱动技术，以促进微米尺度的动态磁场的宽场磁成像。 DDQ成像采用四色射频脉冲来抑制NV谐振反应的不均匀性诱导的变化。作为原则证明，我们使用DDQ技术来成像由单个磁性纳米颗粒产生的直流磁场，该磁性纳米颗粒由单个DNA分子束缚在钻石传感器表面上。这证明了Diamond NV集合系统在高帧速率磁显微镜以及单分子生物物理的应用中的功效。
Wide-field magnetometry can be realized by imaging the optically-detected magnetic resonance of diamond nitrogen vacancy (NV) center ensembles. However, NV ensemble inhomogeneities significantly limit the magnetic-field sensitivity of these measurements. We demonstrate a double-double quantum (DDQ) driving technique to facilitate wide-field magnetic imaging of dynamic magnetic fields at a micron scale. DDQ imaging employs four-tone radio frequency pulses to suppress inhomogeneity-induced variations of the NV resonant response. As a proof-of-principle, we use the DDQ technique to image the dc magnetic field produced by individual magnetic-nanoparticles tethered by single DNA molecules to a diamond sensor surface. This demonstrates the efficacy of the diamond NV ensemble system in high-frame-rate magnetic microscopy, as well as single-molecule biophysics applications.
