自由气体的无反冲散射

Observation of photon recoil effects in single-beam absorption spectroscopy with an ultracold strontium gas

We report on observing photon recoil effects in the absorption of a single monochromatic light at 689~nm through an ultracold $^{88}$Sr gas, where the recoil frequency is comparable to natural linewidth of the narrow-line transition $5\mathrm{s^2}\, ^1\textrm{S}_0 - 5\mathrm{s}5\mathrm{p}\, ^3\textrm{P}_1$ in strontium. In the regime of high-saturation, the absorption profile becomes asymmetric due to the photon-recoil shift, which is of the same order as the natural linewidth. The lineshape is described by an extension of the optical Bloch equations including the momentum transfers to atoms d…

反冲极限处的腔控集体散射

Cavity-Controlled Collective Scattering at the Recoil Limit

研究了玻色-爱因斯坦凝聚体与高精细度环形腔相互作用的集体散射。冷凝物将横向泵浦光束的光超辐射地散射成模式，与先前的实验相反，该模式不是由冷凝物的几何形状确定的，而是由谐振腔模式指定的。此外，由于反冲移位的散射光的频率取决于初始动量的散射分数的凝聚体，我们表明，它是可能的，采用良好的分辨率的腔作为过滤器选择特定的量子化动量状态。

μ介子超精细分裂的光-光散射非对数修正

Light-by-Light Scattering Nonlogarithmic Corrections to Hyperfine Splitting in Muonium

我们考虑三圈修正超精细分裂产生的规范不变的虚拟光由光散射块图集的μ介子。这些图产生反冲和非反冲贡献超精细分裂。反冲修正增强的μ子-电子质量比的大μ ms。无反冲修正和几何增强的辐射反冲修正都是以前计算过的。在这里，我们计算非对数的辐射反冲校正所产生的插入光的光散射块。

Superradiant atomic recoil lasing with orbital angular momentum light

We analyze the collective light scattering by cold atoms in free space of a pump laser beam possessing orbital angular momentum. We derive a set of coupled equations for the atomic motion in which the vacuum-mode field is adiabatically eliminated. The resulting equations describe collective recoil as due to either transfer of linear momentum or orbital angular momentum. For a transverse annular atomic distribution the initial equilibrium with uniform atomic phases and no scattered field, is unstable. The atoms are set in rotation and bunched in phase at different harmonics depending on the pum…

μ介子超精细分裂的光-光散射单对数修正

Light-by-Light Scattering Single-Logarithmic Corrections to Hyperfine Splitting in Muonium

我们考虑三圈辐射反冲修正产生的规范不变的一组图与虚拟光的光散射块的超精细分裂的μ介子。这些修正是由电子-μ子质量比的大振幅增强的。我们提出的单对数辐射反冲修正的$α^2(Zα)(m/M)E_F$阶超精细分裂的μ素产生的这些图表的解析计算的结果。