AI 中文总结
本研究提出一种以声驱动磁电谐振器为发射端、量子金刚石磁力计为接收端的混合磁通信系统，在20 kHz下实现交流磁场的幅度和相位编码传输，灵敏度优于传统环形天线方案。
AI 中文摘要
通过传播磁场实现的无线通信是一种通信模态，近年来在导电介质（如水下和地下）的中短距离通信领域受到显著关注，现有利用电场的方法在这些场景中效率极低。典型的磁通信实现方式采用环形天线作为发射端和接收端，其灵敏度随环形横截面积增大而提升，频率响应则随环形横截面积增大而降低。本文探索一种混合磁通信系统，该系统包含辐射效率高、结构紧凑的声驱动磁电谐振器作为发射端，以及基于金刚石中氮-空位中心的微米级高灵敏度量子磁力计作为接收端，二者核心特性不受尺寸限制。我们演示了在$\boldsymbol{f_{AC}=20\\ kHz}$下对交流磁场进行幅度和相位编码的发射与接收，分别实现了50 pT/$\sqrt{\mathrm{Hz}}$和1.2 mrad/$\sqrt{\mathrm{Hz}}$的灵敏度。本研究证实，混合磁电谐振器与量子金刚石磁力计通信系统可作为现有环形天线方案的可行替代方案。
英文摘要
Wireless communication via propagating magnetic fields is a communication modality that has recently garnered significant interest for short-to-medium range communication in conductive mediums, such as underwater and underground, where existing approaches utilizing electric fields are highly inefficient. Typical implementations of magnetic communication make use of loop antennas as both the transmitter and receiver, with the sensitivity and frequency response scaling with and inversely with the loop cross-sectional area, respectively. Here, we explore an alternative hybrid magnetic communication system consisting of an highly radiation efficient and compact acoustically actuated magnetoelectric resonator as the transmitter, and a highly sensitive micrometer scale quantum magnetometer based on nitrogen-vacancy centers in diamond as the receiver, with their core properties unconstrained by size. We demonstrate amplitude and phase-encoded transmission and reception of AC magnetic fields at $f_{\mathrm{AC}}$ = 20 kHz, achieving a sensitivity of 50 pT/$\sqrt{\mathrm{Hz}}$ and 1.2 mrad/$\sqrt{\mathrm{Hz}}$, respectively. This work establishes the use of hybrid magnetoelectric resonator and quantum diamond magnetometer communication system as a viable alternative to existing loop-based approaches.
