Development of fused silica monolithic trap for two-dimensional ion crystal

Two-dimensional (2D) quantum platforms are critical for exploring strongly correlated many-body physics phenomena. As a 2D quantum simulation platform, we have produced a monolithic alumina chip trap designed to load 2D stationary ion crystals [1,2]. However, the performance of the trap in increasing the number of trapped ions and simulating quantum magnetism was limited mainly by the large heating rate [2]. Here, we have developed a novel monolithic trap using 3D printing technology with femto-second lasers on fused silica to address the limitations of the previous trap. The fabrication precision and the surface roughness were improved and reduced by an order of magnitude. The thickness of the gold coating was around 1 µm, comparable to the alumina trap. We also included an electric-field shielding structure that can suppress electric noise by several tens of times. These improvements would enable us to stably trap a large number of ions and facilitate the manipulation of more qubits, thereby establishing a large-scale 2D quantum simulation platform.



Key word:Quantum computation, quantum simulation, monolithic ion trap.



[1] Wang Ye, et al. Adv. Quantum Techn. 3, 2000068 (2020).

[2] Qiao Mu, et al. Nature Physics (2024): 1-8.