论文标题
傅立叶变换检测弱光学转变使用循环例程
Fourier transform detection of weak optical transitions with cyclic routines
论文作者
论文摘要
我们展示了一种检测冷原子中弱光学转变的手段，该光原子经历了高灵敏度的循环例程。灵敏度的增益是通过探测原子对替代循环的原子而产生的，从而在谐振频率处进行定期调节原子种群。通过通过算法或仪器进行快速傅立叶变换来识别原子过渡。与在同一采样时间内$ \ sim 20 $的更常规扫描方法相比，我们发现检测灵敏度的增强，并且可以在磁磁陷阱中检测到少于$ 10^3 $原子的时钟线。我们将方法应用于$（6S^{2}）$ $^{1} s_ {0} - （6s6p）$ $^{3} p_ {0} $ clock transition in $^{171} $ yb和$ yb and $^{173} $ yb。该线在$^{171} $ yb中的AC-Stark偏移测量为0.19（3）kHz $ \ cdot $ w $^{ - 1} \ cdot $ m $ m $^2 $在556 nm处。
We demonstrate a means of detecting weak optical transitions in cold atoms that undergo cyclic routines with high sensitivity. The gain in sensitivity is made by probing atoms on alternate cycles leading to a regular modulation of the ground state atom population when at the resonance frequency. The atomic transition is identified by conducting a fast Fourier transform via algorithm or instrument. We find an enhancement of detection sensitivity compared to more conventional scanning methods of $\sim 20$ for the same sampling time, and can detect clock lines with fewer than $10^3$ atoms in a magneto-optical trap. We apply the method to the $(6s^{2})$ $ ^{1}S_{0} - (6s6p)$ $^{3}P_{0}$ clock transition in $^{171}$Yb and $^{173}$Yb. The ac-Stark shift of this line in $^{171}$Yb is measured to be 0.19(3) kHz$\cdot$W$^{-1}\cdot$m$^2$ at 556 nm.
