论文标题
单个捕获离子的黑暗状态的光频率分析
Optical frequency analysis on dark state of a single trapped ion
论文作者
论文摘要
我们使用从单个捕获的40CA+离子发出的荧光光子检测时间的傅立叶转换证明了一种光学频率分析方法。检测到的光子速率对相对激光频率偏差的响应记录在与两个光学偶极转变相对应的LAMBDA型能级方案中形成的暗谐振的斜率内。这种方法增强了对较小频率偏差的敏感性，并以对荧光速率的相互依赖性来做到这一点。使用的激光器相位锁定到光学频率梳子，从而通过确定分析的激光束相对于参考光束来精确校准光学频率分析。可达到的高信噪比高达MHz的调制偏差范围和一百kHz调制频率的可达到的可达到的可达到的高度范围，并有望在广泛的光学光谱应用中适用。
We demonstrate an optical frequency analysis method using the Fourier transform of detection times of fluorescence photons emitted from a single trapped 40Ca+ ion. The response of the detected photon rate to the relative laser frequency deviations is recorded within the slope of a dark resonance formed in the lambda-type energy level scheme corresponding to two optical dipole transitions. This approach enhances the sensitivity to the small frequency deviations and does so with reciprocal dependence on the fluorescence rate. The employed lasers are phase locked to an optical frequency comb, which allows for precise calibration of optical frequency analysis by deterministic modulation of the analyzed laser beam with respect to the reference beam. The attainable high signal-to-noise ratios of up to a MHz range of modulation deviations and up to a hundred kHz modulation frequencies promise the applicability of the presented results in a broad range of optical spectroscopic applications.
