Diamond NV Centers Based Quantum Sensor Using a VCO Integrated With Filtering Antenna
Diamond NV Centers Based Quantum Sensor Using a VCO Integrated With Filtering Antenna
复制标题
DOI：
10.1109/tim.2022.3200085
复制
发表时间：
2022
影响因子：
5.6
通讯作者：
Yang Gao;Y. Zeng;Mingming Cui;Yingying Qiao;Xun Yang;Chaonan Lin;Jiale Zhao;Lei Li;Yi Wang
中科院分区：
文献类型：
--
作者：
Yang Gao;Y. Zeng;Mingming Cui;Yingying Qiao;Xun Yang;Chaonan Lin;Jiale Zhao;Lei Li;Yi Wang
提出了一种采用压控振荡器(VCO)和滤波天线相结合的金刚石氮空位(NV)中心磁场传感器。在现有的基于NV的量子传感系统中，微波源和传输单元是由一套庞大而昂贵的仪器实现的。这限制了它的实际应用和可移植性。在此，设计了一个集成了滤波天线的压控振荡器，为NV中心提供了更均匀、更高效、更宽带和更低相位噪声的微波场耦合。结果，与使用诸如天线、传输线和谐振器等分离的微波组件的传统方案相比，灵敏度和动态范围都得到了改善。此外，在这项工作中，还首次使用混合微波集成电路(HMICS)技术集成了滤光片和光电探测器。这大大提高了NV磁力计的集成度，降低了成本。实验结果表明，该压控振荡器集成滤波天线的灵敏度为8.52 mU/Hz1/2，动态范围达32.73 d B，与单谐振腔压控振荡器相比有很大的提高。这验证了该方法的有效性。
This article presents a diamond nitrogen-vacancy (NV) center-based magnetic field sensor using a voltage-controlled oscillator (VCO) integrated with a filtering antenna. In existing NV-based quantum sensing systems, microwave source and delivery units are implemented by a set of bulky and costly instruments. This limits its practical applications as well as portability. Here, a VCO integrated with the filtering antenna is designed, providing a more uniform, efficient, broadband and lower phase noise microwave field coupling to the NV centers. As a result, the sensitivity and the dynamic range have been improved over the conventional scheme using separate microwave components, such as antennas, transmission lines, and resonators. Moreover, in this work, the optic filter and photodetector are also integrated using the hybrid microwave integrated circuits (HMICs) technique for the first time. This significantly increases the integration level and reduces the cost of the NV-based magnetometers. The experimental results indicate that our VCO integrated filtering antenna achieves a sensitivity of $8.52~\mu \text{T}$ /Hz $^{\mathrm {1/2}}$ and a dynamic range up to 32.73 dB, which are both greatly improved compared to the VCO with a single resonator. This validates the effectiveness of the approach.