标题： 双共振场下悬浮小球的光力学冷却 显示英文标题

标题： Optomechanical cooling of levitated spheres with doubly-resonant fields

摘要： 悬浮介电粒子的光力学冷却代表了朝向量子基态冷却小型机械谐振子的一种有前景的新方法。 我们研究了自陷状态下悬浮纳米球的双模冷却。 我们发现了一种丰富的分裂边带结构（通过一种与通常强耦合效应无关的机制），即使其中一个模式处于蓝失谐状态时，冷却效果仍然显著。 我们表明最佳的冷却条件出现在光学场协同冷却和捕获纳米球的情况下，此时冷却速率比相应的单边带冷却速率快一个数量级以上。 显示英文摘要

摘要： Optomechanical cooling of levitated dielectric particles represents a promising new approach in the quest to cool small mechanical resonators towards their quantum ground state. We investigate two-mode cooling of levitated nanospheres in a self-trapping regime. We identify a rich structure of split sidebands (by a mechanism unrelated to usual strong-coupling effects) and strong cooling even when one mode is blue detuned. We show the best regimes occur when both optical fields cooperatively cool and trap the nanosphere, where cooling rates are over an order of magnitude faster compared to corresponding single-sideband cooling rates.