论文标题
3D交感神经冷却和悬浮纳米颗粒的检测
3D sympathetic cooling and detection of levitated nanoparticles
论文作者
论文摘要
冷却悬浮的纳米颗粒的质量运动，为介质尺度上的量子实验提供了途径。在这里，我们证明了三维交感神经冷却和悬浮二氧化硅纳米颗粒的质量运动的检测。纳米颗粒静电耦合到反馈冷却的粒子，而两个颗粒都被困在同一Paul陷阱中。我们根据冷却的强度确定了两个制度：在第一个制度中，交感冷却的粒子与直接冷却的粒子对粒子进行热层化，而在第二个制度中，交感冷却的粒子达到最低温度。该结果提供了有效冷却和检测无法用强激光光（例如吸收颗粒）照亮的颗粒的途径，并为控制几个被困纳米颗粒的阵列的运动铺平了道路。
Cooling the center-of-mass motion of levitated nanoparticles provides a route to quantum experiments at mesoscopic scales. Here we demonstrate three-dimensional sympathetic cooling and detection of the center-of-mass motion of a levitated silica nanoparticle. The nanoparticle is electrostatically coupled to a feedback-cooled particle while both particles are trapped in the same Paul trap. We identify two regimes, based on the strength of the cooling: in the first regime, the sympathetically cooled particle thermalizes with the directly cooled one, while in the second regime, the sympathetically cooled particle reaches a minimum temperature. This result provides a route to efficiently cool and detect particles that cannot be illuminated with strong laser light, such as absorptive particles, and paves the way for controlling the motion of arrays of several trapped nanoparticles.
