论文标题
使用外部谐波电势在光学晶格上运输原子
Transport of atoms across an optical lattice using an external harmonic potential
论文作者
论文摘要
许多有趣或新颖的实验需要精确控制量子颗粒。在这里，我们考虑使用外部谐波电位从光学晶格的一个孔到另一个没有动作激发的任务。为此，我们将从快捷方式到绝热性（STA）的技术实现了快速，稳健的状态操作。该过程分为三个独立的构件；首先，原子被加载到附加的外部谐波陷阱中；然后将此陷阱从一个晶格部位运到另一个晶格位置，最后通过打开外部谐波陷阱将原子卸载回晶格。我们使用基于不变的逆工程分别为每个构建块设计协议。此外，我们将此方法扩展到了由毛细血管方程式描述的玻色网冷凝物的运输。
Precise control of quantum particles is required for many interesting or novel experiments. Here we consider the task of transporting an atom using an external harmonic potential from one well of an optical lattice to another without motional excitations. To achieve this we apply techniques from Shortcuts to Adiabaticity (STA) enabling fast and robust state manipulation. The process is split up into three independent building blocks; first the atom is loaded into an additional external harmonic trap; this trap is then transported from one lattice site to another and finally the atom is unloaded back onto the lattice by opening the external harmonic trap. We design protocols for each of these building blocks separately using invariant-based inverse engineering. Additionally we extend this method to the transport of a Bose-Einstein condensate described by the Gross-Pitaevskii equation.
