arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2501.06162quant-phphysics.atom-phphysics.optics
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单原子陷阱的现场装载

On-the-Spot Loading of Single-Atom Traps

Mark IJspeert, Naomi Holland, Benjamin Yuen, Axel Kuhn

AI总结:

本文通过增加静态光偶极陷阱深度,实现了单原子陷阱的快速装载与延长寿命,无需重排原子即可达到79%的填充率。

摘要:

可重构的单原子捕获阵列是模拟多体物理和实现高保真量子门的优秀平台。原子的限制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——增强双原子损失率——确保可以实现陷阱的单原子占据。然而,当直接从周围的激光冷却原子云中装载时,捕获单个原子的时间平均概率限制在$0.5$,这阻止了大型阵列的确定性填充。在这项工作中,我们证明了增加静态光学偶极陷阱的深度可以实现从$2.1\\,$秒时间尺度的快速装载到$7.9\\,$秒的延长陷阱寿命的转变。该方法展示了无需重新排列原子以填充空陷阱即可实现$(79\pm2)\\%$的填充率。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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