| ATOMIC AND MOLECULAR PHYSICS |
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Transporting Cold Atoms towards a GaN-on-Sapphire Chip via an Optical Conveyor Belt |
| Lei Xu1,2, Ling-Xiao Wang1,2, Guang-Jie Chen1,2, Liang Chen1,2, Yuan-Hao Yang1,2, Xin-Biao Xu1,2, Aiping Liu3, Chuan-Feng Li1,2, Guang-Can Guo1,2,4, Chang-Ling Zou1,2,4*, and Guo-Yong Xiang1,2,4* |
1CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China
2CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
3Institute of Quantum Information and Technology, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
4Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China
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| Cite this article: |
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Lei Xu, Ling-Xiao Wang, Guang-Jie Chen et al 2023 Chin. Phys. Lett. 40 093701 |
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Abstract Trapped atoms on photonic structures inspire many novel quantum devices for quantum information processing and quantum sensing. Here, we demonstrate 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 belts. Due to our platform's complete optical accessibility and careful control of atomic motion near the chip with a conveyor belt, successful atomic transport towards the chip is made possible. The maximum transport efficiency of atoms is about $50\%$ with a transport distance of $500\,\mathrm{µ m}$. Our results open up a new route toward the efficient 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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Received: 26 May 2023
Published: 28 August 2023
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