单原子运动的动态全息光镊研究
Single atom movement with dynamic holographic optical tweezers
摘要：
本文报道了一种用于囚禁单原子的动态全息光镊的实验实现。利用液晶空间光调制器显示的动态相位全息图实现光镊。实验证明了利用这种动态势囚禁和移动单个铷原子的可能性，并研究了其局限性。我们的结果表明，单原子在光镊中的高几率转移可以在比阱腰大得多的大步阶中进行。本文讨论了全息光阱中的光强闪烁现象及其抑制技术。在动态镊子的损失和加热速率进行测量，没有多余的损失或加热相比，观察到静态陷阱。
英文摘要：
We report an experimental implementation of dynamical holographic tweezers for single trapped atoms. The tweezers are realized with dynamical phase holograms displayed on the liquid crystal spatial light modulator. We experimentally demonstrate the possibility to trap and move single rubidium atoms with such dynamic potentials, and study its limitations. Our results suggest that high probability transfer of single atoms in the tweezers may be performed in large steps, much larger then the trap waist. We discuss intensity-flicker in holographic traps and techniques for its suppression. Loss and heating rates in dynamic tweezers are measured and no excess loss or heating is observed in comparison with static traps.
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