We present the design and experimental demonstration of an open-endcap radio frequency trap to confine ion crystals in the radial-two dimensional (2D) structural phase. The central axis of the trap is kept free of obstructions to allow for site-resolved imaging of ions in the 2D crystal plane, and the confining potentials are provided by four segmented blade electrodes. We discuss the design challenges, fabrication techniques, and voltage requirements for implementing this open-endcap trap. Finally, we validate its operation by confining up to 29 ions in a 2D triangular lattice, oriented such that both in-plane principal axes of the 2D crystal lie in the radial direction.

我们展示了一种开放式端帽射频阱的设计和实验演示，用于将离子晶体限制在径向二维 (2D) 结构相中。陷阱的中心轴保持畅通无阻，以允许对 2D 晶面中的离子进行现场分辨成像，并且限制电位由四个分段的刀形电极提供。我们讨论了实现这种开端帽陷阱的设计挑战、制造技术和电压要求。最后，我们通过将多达 29 个离子限制在 2D 三角形晶格中来验证其操作，其取向使得 2D 晶体的两个面内主轴都位于径向方向。