Ultracold atoms with synthetic gauge field

In recent decades, ultra-cold atomic gases (temperature scale of nano-Kelvin) have become versatile platforms to study many fascinating phenomena in various fields of physics, owing to their unprecedented purity and controllability of interactions and geometries. In this thesis, we aim to investigate a synthetic Raman-type spin-orbit coupling in a three-dimensional Bose gas. The spin-orbit coupling arising from the interaction of a particle’s spin with its motion plays a crucial role in physics. Our studies of the static and dynamic properties including the ground-state phases, collective oscillations, sound velocity and superfluidity, may help us better understand this exotic effect in nature.