AI 中文总结
该研究提出一种融合光力学谐振器与原子干涉仪的混合惯性传感器，其振动抑制效果优于商用加速度计，可直接适配其他精密传感平台。
AI 中文摘要
原子干涉仪是灵敏度最高的惯性传感器之一，但在实验室外的部署受限于振动噪声，这类噪声通常通过外部传感器或笨重的隔离装置来抑制。本文展示了一种混合惯性传感器，它将光力学谐振器与原子干涉仪融合，利用谐振器的测试质量作为干涉仪的参考镜。与两个独立传感器相比，该方案能实现更好的相关性，两个独立传感器的未知传递函数被单个力学元件的静态响应所取代。该谐振器的位移灵敏度达到$8.6\cdot10^{-15}$ m/$\u221a$Hz，1/f噪声受到抑制，在从亚赫兹到2.5 kHz的带宽内，其最小加速度灵敏度为$1.1\cdot10^{-6}$ m/s$^2$/$\u221a$Hz。在实验室环境下，该集成系统可消除高达$50\cdot10^{-3}$ m/s$^2$加速度下的振动诱导相位模糊，且达到干涉仪的技术噪声极限，这是商用力平衡加速度计无法实现的。由于谐振跟踪读出在很大程度上与力学设计无关，该架构可直接应用于其他精密传感平台。
英文摘要
Atom interferometers are among the most sensitive inertial sensors, yet deployment outside the laboratory is limited by vibration noise, conventionally mitigated by external sensors or bulky isolation. Here we demonstrate a hybrid inertial sensor which fuses an optomechanical resonator and an atom interferometer by exploiting the resonator's test mass as the interferometer's reference mirror. This allows for better correlation than with two separate sensors, whose unknown transfer function is replaced by the static response of one mechanical element. The resonator achieves a displacement sensitivity of $8.6\cdot 10^{-15}$ m/$\sqrt{\mathrm{Hz}}$ with suppressed 1/f noise and yields a minimum acceleration sensitivity of $1.1\cdot10^{-6}$ m/s$^2$/$\sqrt{\mathrm{Hz}}$ over a bandwidth extending from sub-Hertz to 2.5 kHz. Under ambient laboratory conditions the integrated system removes vibration-induced phase ambiguity for accelerations up to $50\cdot 10^{-3}$ m/s$^2$ and reaches the interferometer's technical noise limit, which a commercial force-balance accelerometer does not. Because the resonance-tracking readout is largely independent of the mechanical design, the architecture transfers directly to other precision sensing platforms.
