论文标题
超敏感的原子孔量表具有增强的核自旋连贯性
Ultrasensitive atomic comagnetometer with enhanced nuclear spin coherence
论文作者
论文摘要
在旋转系统中实现高能量分辨率对于基本物理研究和精确测量很重要，碱 - 噪声 - 气体计量表是最好的最佳传感器之一。我们在此类设备中发现了一种新的松弛机制，即费米连接相互作用场的梯度，它主导了超极化核自旋的松弛。我们报告了对自旋分布的精确控制，这表明核自旋超极化和横向相干时间的十倍增加，最佳混合光学泵送。在自我补偿方案中运行，我们的$^{21} $ ne-rb-k comagnetometer实现了超高的惯性旋转灵敏度$ 3 \ times10^{ - 8} $ \，rad/s/s/s/s/s/s/s/s/s/s/s/hz $^{1/2} $在0.2到1.0 hz的频率范围中10^{ - 23} $ \，ev/hz $^{1/2} $。我们建议使用这种comagnetomer来搜索涉及质子和中子旋转的外来自旋依赖性相互作用。预测的灵敏度超过了先前的实验和天体物理极限，超过四个数量级。
Achieving high energy resolution in spin systems is important for fundamental physics research and precision measurements, with alkali-noble-gas comagnetometers being among the best available sensors. We found a new relaxation mechanism in such devices, the gradient of the Fermi-contact-interaction field that dominates the relaxation of hyperpolarized nuclear spins. We report on precise control over spin distribution, demonstrating a tenfold increase of nuclear spin hyperpolarization and transverse coherence time with optimal hybrid optical pumping. Operating in the self-compensation regime, our $^{21}$Ne-Rb-K comagnetometer achieves an ultrahigh inertial rotation sensitivity of $3\times10^{-8}$\,rad/s/Hz$^{1/2}$ in the frequency range from 0.2 to 1.0 Hz, which is equivalent to the energy resolution of $3.1\times 10^{-23}$\,eV/Hz$^{1/2}$. We propose to use this comagnetometer to search for exotic spin-dependent interactions involving proton and neutron spins. The projected sensitivity surpasses the previous experimental and astrophysical limits by more than four orders of magnitude.
