Transporting cold atoms towards a GaN-on-sapphire chip via an optical conveyor belt

Lei Xu; Ling-Xiao Wang; Guang-Jie Chen; Liang Chen; Yuan-Hao Yang; Xin-Biao Xu; Aiping Liu; Chuan-Feng Li; Guang-Can Guo; Chang-Ling Zou; Guo-Yong Xiang

arXiv · 2305.07900

Transporting cold atoms towards a GaN-on-sapphire chip via an optical conveyor belt

Lei Xu·Ling-Xiao Wang·Guang-Jie Chen·Liang Chen·Yuan-Hao Yang·Xin-Biao Xu·Aiping Liu·Chuan-Feng Li·Guang-Can Guo·Chang-Ling Zou·Guo-Yong Xiang

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Abstract

Trapped atoms on photonic structures inspire many novel quantum devices for quantum information processing and quantum sensing. Here, we have demonstrated a hybrid photonic-atom chip platform based on a GaN-on-sapphire chip and the transport of an ensemble of atoms from free space towards the chip with an optical conveyor belt. The maximum transport efficiency of atoms is about 50% with a transport distance of 500 $\mathrm{\mu m}$. Our results open up a new route toward the efficiently loading of cold atoms into the evanescent-field trap formed by the photonic integrated circuits, which promises strong and controllable interactions between single atoms and single photons.

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Lei Xu, Ling-Xiao Wang, Guang-Jie Chen, Liang Chen, Yuan-Hao Yang, Xin-Biao Xu, Aiping Liu, Chuan-Feng Li, Guang-Can Guo, Chang-Ling Zou, Guo-Yong Xiang. 2023-05-13. Transporting cold atoms towards a GaN-on-sapphire chip via an optical conveyor belt. https://arxiv.org/abs/2305.07900

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