AI 中文总结
针对磁强计仅在低频提高灵敏度问题，提出在一个单元中对两种碱金属相关测量来消除高频磁背景，利用光与物质相互作用响应函数的种间相位差，以暗物质信号为测试实现背景抑制和模型区分，提升精密测量能力。
AI 中文摘要
磁强计是科技领域中应用最广泛的探测器之一。共磁强计通过自抵消磁噪声提高灵敏度，但仅在低频下有效。我们提出在一个单元中对两种碱金属进行相关测量，以在高频下也能消除磁背景。发现光与物质相互作用响应函数的种间相位差无需校准且对共模强度噪声不敏感。以暗物质信号为测试案例，该方法实现了30倍的背景抑制，根据与不同亚原子粒子的耦合情况，将信噪比提高了一个数量级或更多。我们还表明该方法能实现模型区分。更高的灵敏度和模型区分能力为精密测量尤其是在特殊领域开辟了新的探测途径。
英文摘要
Magnetometers are among the most widely used probes in science and technology. Comagnetometers increase sensitivity by self-cancellation of magnetic noise, but only at low frequencies. We suggest a correlated measurement of two alkali species in one cell to cancel the magnetic background also at high frequencies. The inter-species phase difference of the light-matter interaction response function is found to be calibration free and insensitive to common-mode intensity noise. Utilizing a dark-matter signal as a testcase, the method achieves a thirtyfold background suppression, raising the signal-to-noise ratio by an order of magnitude or more, depending on the coupling to the different subatomic particles. We show that the method also provides model differentiation. The higher sensitivity and model differentiation open a path to novel probes for precision measurements in general and exotic fields in particular.
Comments11 pages, 4 figures
