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An open-endcap blade trap for radial-2D ion crystals
Quantum Science and Technology  (IF5.994),  Pub Date : 2021-09-07, DOI: 10.1088/2058-9565/ac1e38
Yuanheng Xie, Jiafeng Cui, Marissa D’Onofrio, A J Rasmusson, Stephen W Howell, Philip Richerme

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.