Precise positioning of an ion in an integrated Paul trap-cavity system using radiofrequency signals
Precise positioning of an ion in an integrated Paul trap-cavity system using radiofrequency signals
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DOI：
10.1080/09500340.2017.1406158
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发表时间：
2018-01-01
影响因子：
1.3
通讯作者：
Keller, Matthias
中科院分区：
文献类型：
--
作者：
Kassa, Ezra;Takahashi, Hiroki;Keller, Matthias
我们报告了一种新型的微型保罗离子阱设计，具有集成的光纤腔，可以作为光纤连接量子网络的构建模块。在这种腔量子电动力学设置中，离子与腔模式的最佳耦合是至关重要的，这是通过相对于腔模式移动离子来实现的。本文提出的陷阱具有端盖式设计，并补充了额外的电极，在其上施加额外的射频电压以完全控制三维中的赝势最小值。该方法解除了使用三维平移台来相对于离子移动光纤腔的需要，并实现了高集成性、机械刚性和可扩展性。不基于修改阱的电容负载，该方法导致对赝势最小值的精确控制，从而允许离子以仅由离子的位置扩展限制的精度移动。我们证明了这一点，通过耦合的离子的光纤腔和探测的腔模式分布。
We report a novel miniature Paul ion trap design with an integrated optical fibre cavity which can serve as a building block for a fibre-linked quantum network. In such cavity quantum electrodynamic set-ups, the optimal coupling of the ions to the cavity mode is of vital importance and this is achieved by moving the ion relative to the cavity mode. The trap presented herein features an endcap-style design complemented with extra electrodes on which additional radiofrequency voltages are applied to fully control the pseudopotential minimum in three dimensions. This method lifts the need to use three-dimensional translation stages for moving the fibre cavity with respect to the ion and achieves high integrability, mechanical rigidity and scalability. Not based on modifying the capacitive load of the trap, this method leads to precise control of the pseudopotential minimum allowing the ion to be moved with precisions limited only by the ion's position spread. We demonstrate this by coupling the ion to the fibre cavity and probing the cavity mode profile.