标题： 现场加载单原子陷阱 显示英文标题

标题： On-the-Spot Loading of Single-Atom Traps

摘要： 可重构的束缚单原子阵列是模拟多体物理和实现高保真量子门的优秀平台。 原子的束缚通常通过聚焦激光束作为光学偶极力陷阱来实现，这些陷阱允许原子的静态和动态定位。 在这些陷阱中，光辅助碰撞会增强双原子损失率，从而确保可以实现每个陷阱中单原子占据。 然而，当直接从周围激光冷却原子云中装载时，捕获单个原子的时间平均概率被限制为$0.5$，这阻碍了大型阵列的确定性填充。 在本工作中，我们证明增加静态光学偶极陷阱的深度可以使装载时间尺度从$2.1\,$秒加快到延长的陷阱寿命$7.9\,$秒。这种方法展示了无需重新排列原子即可填充空陷阱的可实现填充比$(79\pm2)\,\%$。 显示英文摘要

摘要： Reconfigurable arrays of trapped single atoms are an excellent platform for the simulation of many-body physics and the realisation of high-fidelity quantum gates. The confinement of atoms is often achieved with focussed laser beams acting as optical dipole-force traps that allow for both static and dynamic positioning of atoms. In these traps, light-assisted collisions -- enhancing the two-atom loss rate -- ensure that single atom occupation of traps can be realised. However, the time-averaged probability of trapping a single atom is limited to $0.5$ when loading directly from a surrounding cloud of laser-cooled atoms, preventing deterministic filling of large arrays. In this work, we demonstrate that increasing the depth of a static, optical dipole trap enables the transition from fast loading on a timescale of $2.1\,$s to an extended trap lifetime of $7.9\,$s. This method demonstrates an achievable filling ratio of $(79\pm2)\,\%$ without the need of rearranging atoms to fill vacant traps.