标题： 普尔塞尔增强的量子吸附 显示英文标题

标题： Purcell-enhanced quantum adsorption

摘要： 冷原子在发射单个声子时可以吸附到表面上，当结合能足够小时。 本文研究了在这一量子区域中，声子阻尼和吸附剂尺寸对吸附速率的影响，采用的是多模拉比模型。 结果表明，相对于费米黄金规则速率，吸附速率可以被增强或抑制，类似于量子电动力学中腔效应对自发辐射速率的影响。 中等尺度的吸附剂表现得像一个声学谐振腔，当调谐至吸附跃迁频率时增强吸附速率，而失谐时则抑制速率。 这种声学谐振腔效应发生在振动模式之间的频率间隔超过声子线宽的区域。 显示英文摘要

摘要： Cold atoms can adsorb to a surface with the emission of a single phonon when the binding energy is sufficiently small. The effects of phonon damping and adsorbent size on the adsorption rate in this quantum regime are studied using the multimode Rabi model. It is demonstrated that the adsorption rate can be either enhanced or suppressed relative to the Fermi golden rule rate, in analogy to cavity effects in the spontaneous emission rate in QED. A mesoscopic-sized adsorbent behaves as an acoustic cavity that enhances the adsorption rate when tuned to the adsorption transition frequency and suppresses the rate when detuned. This acoustic cavity effect occurs in the regime where the frequency spacing between vibrational modes exceeds the phonon linewidth.