论文标题
驱动碱性rydberg的碱性光学晶格过渡
Driving alkali Rydberg transitions with a phase-modulated optical lattice
论文作者
论文摘要
我们使用相位控制的和调制的站立激光场来开发并演示用于Rydberg-Rydberg转变的光谱法，该方法集中在冷$^{85} $ rb rydberg原子上。该方法基于ponderomotive（$ {\ bf {a}}^2 $）rydberg电子的相互作用，该相互作用的选择规则比电动 - 偶极耦合少，使我们能够探测$ ns_ {1/2} \ rightArrow np_ np_ np_ {1/2} $ ns_ {1/2} $ ns_ {1/2222 （n+1）s_ {1/2} $在一阶中过渡。无需提高激光功率，使用KU波段中广泛可用的光相调节剂（12至18 GHz），使用了40至70 GHz频率范围的Rydberg转变访问Rydberg的转换。测量与基于我们开发的模型的模拟非常吻合。这些光谱具有突出的无多普勒，傅立叶限制的组件。该方法为Rydberg-Rydberg跃迁的光学多普勒高精度光谱铺平了道路，并在基于Rydberg的模拟器和量子计算机中使用$ $ $ M-SCALE分辨率的空间选择量子操作。
We develop and demonstrate a spectroscopic method for Rydberg-Rydberg transitions using a phase-controlled and -modulated, standing-wave laser field focused on a cloud of cold $^{85}$Rb Rydberg atoms. The method is based on the ponderomotive (${\bf{A}}^2$) interaction of the Rydberg electron, which has less-restrictive selection rules than electric-dipole couplings, allowing us to probe both $nS_{1/2}\rightarrow nP_{1/2}$ and $nS_{1/2}\rightarrow (n+1)S_{1/2}$ transitions in first-order. Without any need to increase laser power, third and fourth-order sub-harmonic drives are employed to access Rydberg transitions in the 40 to 70 GHz frequency range using widely-available optical phase modulators in the Ku-band (12 to 18 GHz). Measurements agree well with simulations based on the model we develop. The spectra have prominent Doppler-free, Fourier-limited components. The method paves the way for optical Doppler-free high-precision spectroscopy of Rydberg-Rydberg transitions and for spatially-selective qubit manipulation with $μ$m-scale resolution in Rydberg-based simulators and quantum computers.
