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arXiv · 2507.21456

Efficient single-atom transfer from an optical conveyor belt to a tightly confined optical tweezer

Lei Xu·Ling-Xiao Wang·Guang-Jie Chen·Zhu-Bo Wang·Xin-Biao Xu·Guang-Can Guo·Chang-Ling Zou·Guo-Yong Xiang
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Abstract

Efficient loading of single atoms into tightly confined traps is crucial for advancing quantum information processing and exploring atom-photon interactions. However, directly loading atoms from a magneto-optical trap (MOT) into static tweezers in cavity-based systems and hybrid atom-photon interfaces remains a challenge. Here, we demonstrate atom loading in a tightly confined optical tweezer 0.6mm away from MOT by an optical conveyor belt. By employing real-time feedback control of the atom number in the overlapping region between the conveyor belt and the tweezer, we enhance a single-atom loading probability to 77.6%. Our technique offers a versatile solution for deterministic single-atom loading in various experimental settings and paves the way for diverse applications based on hybrid photonic-atom structures.

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Lei Xu, Ling-Xiao Wang, Guang-Jie Chen, Zhu-Bo Wang, Xin-Biao Xu, Guang-Can Guo, Chang-Ling Zou, Guo-Yong Xiang. 2025-07-29. Efficient single-atom transfer from an optical conveyor belt to a tightly confined optical tweezer. https://arxiv.org/abs/2507.21456

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