Blue-detuned optical atom trapping in a compact plasmonic structure

作     者：ZHAO CHEN FAN ZHANG QI ZHANG JUANJUAN REN HE HAO XUEKE DUAN PENGFEI ZHANG TIANCAI ZHANG YING GU QIHUANG GONG 

作者机构：State Key Laboratory for Mesoscopic Physics Collaborative Innovation Center of Quantum Matter Department of PhysicsPeking University Collaborative Innovation Center of Extreme Optics Shanxi University State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-Electronics Shanxi University 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2017年第5卷第5期

页      面：436-440页

核心收录：

学科分类：07[理学] 070203[理学-原子与分子物理] 0702[理学-物理学] 

基　　金：National Key Basic Research Program(2013CB328700) National Natural Science Foundation of China(NSFC)(11525414,11374025,91221304) 

主　　题：Blue detuned optical atom trapping in a compact plasmonic structure 

摘      要：We theoretically propose blue-detuned optical trapping for neutral atoms via strong near-field interfacing in a plasmonic nanohole array. The optical field at resonance forms a nanoscale-trap potential with an FWHM of 200 nm and about ～370 nm away from the nanohole; thus, a stable 3 D atom trapping independent of the surface potential is demonstrated. The effective trap depth is more than 1 m K when the optical power of trapping light is only about 0.5 m W, while the atom scattering rate is merely about 3.31 s^(-1), and the trap lifetime is about 800 *** compact plasmonic structure provides high uniformity of trap depths and a two-layer array of atom nanotraps, which should have important applications in the manipulation of cold atoms and collective resonance fluorescence.