Magnetic-field-induced deflection of nonlocal light bullets in a Rydberg atomic gas  

作　　者：Xiujia Dong Yao Ding Zhengyang Bai Guoxiang Huang 董秀佳;丁瑶;白正阳;黄国翔(State Key Laboratory of Precision Spectroscopy,Shanghai 200062,China;NYU-ECNU Institute of Physics at NYU Shanghai,Shanghai 200062,China)

机构地区：[1]State Key Laboratory of Precision Spectroscopy,Shanghai 200062,China [2]NYU-ECNU Institute of Physics at NYU Shanghai,Shanghai 200062,China

出　　处：《Chinese Optics Letters》2022年第4期60-64,共5页中国光学快报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(NSFC)(Nos.11975098,11174080,and 11904104);the Shanghai Pujiang Program(No.21PJ1402500).

摘　　要：Light bullets(LBs)are localized nonlinear waves propagating in high spatial dimensions.Finding stable LBs and realizing their control are desirable due to the interesting physics and potential applications.Here,we show that nonlocal LBs generated in a cold Rydberg atomic gas via the balance among the dispersion,diffraction,and giant nonlocal Kerr nonlinearity contributed by long-range Rydberg-Rydberg interaction can be actively manipulated by using a weak gradient magnetic field.Nonlocal LBs are generated by a balance among dispersion,diffraction,and large nonlocal Kerr nonlinearities contributed by long-range Rydberg-Rydberg interactions.Here,we find that active manipulation can be achieved by weak gradient magnetic fields in cold Rydberg atomic gases.Especially,the LBs may undergo significant Stern-Gerlach deflections,and their motion trajectories can be controlled by adjusting the magnetic-field gradient.The results reported here are helpful not only for understanding unique properties of LBs in nonlocal optical media but also for finding ways for precision measurements of magnetic fields.

关 键 词：nonlinear optics optical soliton Rydberg atom 

分 类 号：O562[理学—原子与分子物理]