Transporting Cold Atoms towards a GaN-on-Sapphire Chip via an Optical Conveyor Belt  

作　　者：徐磊 王凌潇 陈广杰 陈梁 杨元昊 徐新标 刘爱萍 李传锋 郭光灿 邹长铃 项国勇 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;and Guo-Yong Xiang(CAS Key Laboratory of Quantum Information,University of Science and Technology of China,Hefei 230026,China;CAS Center for Excellence in Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China;Institute of Quantum Information and Technology,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;Hefei National Laboratory,University of Science and Technology of China,Hefei 230088,China)

机构地区：[1]CAS Key Laboratory of Quantum Information,University of Science and Technology of China,Hefei 230026,China [2]CAS Center for Excellence in Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China [3]Institute of Quantum Information and Technology,Nanjing University of Posts and Telecommunications,Nanjing 210003,China [4]Hefei National Laboratory,University of Science and Technology of China,Hefei 230088,China

出　　处：《Chinese Physics Letters》2023年第9期48-53,共6页中国物理快报（英文版）

基　　金：supported by the National Key R&D Program(Grant No.2021YFF0603701);the National Natural Science Foundation of China(Grant Nos.U21A20433,U21A6006,92265210,12104441,12134014,61905234,and 11974335);the USTC Research Funds of the Double First-Class Initiative(Grant No.YD2030002007),USTC Research Funds of the Double First-Class Initiative;supported by the Fundamental Research Funds for the Central Universities。

摘　　要：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 Ga N-onsapphire 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 500μm.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.

关 键 词：QUANTUM SAPPHIRE TRANSPORT 

分 类 号：O562[理学—原子与分子物理] TN40[理学—物理]