论文标题
通过单个中性原子的量子跳跃光谱法精确，超分辨强度测量
Precise, super-resolving intensity measurement by quantum jump spectroscopy of a single neutral atom
论文作者
论文摘要
我们使用单个被困的$^{87} $ rb原子作为传感器提出精确的次波长度强度测量。强度是通过其在$ f = 1 \ rightArrow f'= 2 $ the d $ _ {2} $线上产生的标量AC stark shift衡量的，它是其$ f'= f'= f+1 $结构和非常小的张量式极化性。为了增强信号并减少测量引起的扰动，我们使用量子跳跃光谱技术，其中单个吸收的光子在兴趣的转变中诱导数百个光子在明亮的闭合过渡上散射。该方法大大降低了与原子态，光学极化，探针功率和原子加热相关的系统效应，并使原子温度作为第二光谱可观察到。我们通过测量光学镊子重点的强度来证明该方法。
We present precise, sub-wavelength optical intensity measurement using a single trapped $^{87}$Rb atom as a sensor. The intensity is measured by the scalar ac Stark shift it produces on the $F=1 \rightarrow F'=2$ hyperfine transition of the D$_{2}$ line, chosen for its $F' = F+1$ structure and very small tensor polarizability. To boost signal and reduce measurement-induced perturbations, we use a quantum jump spectroscopy technique in which a single absorbed photon on a transition of interest induces the scattering of hundreds of photons on a bright closed transition. The method greatly reduces systematic effects associated with the atomic state, optical polarization, probe power, and atom heating, and gives the atomic temperature as a second spectroscopic observable. We demonstrate the method by measuring the intensity at the focus of an optical tweezer.
