We present an experimental system to study the Bose polaron by immersion of single, well-controllable neutral Cs impurities into a Rb Bose-Einstein condensate (BEC). We show that, by proper optical traps, independent control over impurity and BEC allows for precision relative positioning of the two sub-systems as well as for dynamical studies and independent read-out. We furthermore estimate that measuring the polaron binding energy of Fröhlich-type Bose polarons in the low and intermediate coupling regime is feasible with our experimental constraints and limitations discussed, and we outline how a parameter regime can be reached to characterize differences between Fröhlich and Bose-polaron in the strong coupling regime.

中文翻译：

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玻色-爱因斯坦冷凝物中的中性杂质，用于模拟Fröhlich-极化子

我们提出了一个实验系统，用于通过将单一的，可控的中性Cs杂质浸入Rb玻色-爱因斯坦冷凝物（BEC）中来研究Bose极化子。我们表明，通过适当的光阱，对杂质和BEC的独立控制可实现两个子系统的精确相对定位以及动力学研究和独立读出。我们进一步估计，在讨论了我们的实验约束和局限性的情况下，在低耦合耦合和中耦合耦合状态下测量Fröhlich型玻色子极化子的极化子结合能是可行的，并且我们概述了如何达到参数机制来表征Fröhlich和Bose-之间的差异。极化子处于强耦合状态。