Atomic spin orbit coupling synthesized with gradient magnetic fields

29th International Conference on Photonic, Electronic, and Atomic Collisions

Luo, Xinyu^1 ; Wu, Lingna^1 ; Wang, Ruquan^2,3 ; You, L.^1,3

State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing

100084, China^1

Institute of Physics, Chinese Academy of Sciences, Beijing

100080, China^2

Collaborative Innovation Center of Quantum Matter, Beijing, China^3

关键词: Atomic condensates;    Equilibrium state;    Gradient magnetic field;    Harmonic trap;    Magnetic lattice;    Modulation frequencies;    Neutral atoms;    Spin-orbit couplings;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/1/012013/pdf
DOI  :  10.1088/1742-6596/635/1/012013

来源: IOP

【 摘 要 】

Spin orbit coupling (SOC) for neutral atoms can be synthesized with pulsed or time modulating gradient magnetic field (GMF). This is confirmed through the studies of collective dipole oscillations for a spin-1 atomic condensate in a harmonic trap after abruptly turning on SOC and adiabatically adjusted equilibrium states when SOC strength is slowly ramped up. Further measurements reveal that SOC can be enhanced when the GMF modulation frequency approaches harmonic trap frequency. Additionally, we discuss how the technique of pulsed GMF can be used to synthesize space-period magnetic fields, or magnetic lattices.