Bose-Einstein Condensates: Focus on Superfluid Dynamics

Quantum gases offer an exquisite playground for the study of superfluid dynamics: they can be easily manipulated, confined in arbitrary potential landscape, and imaged efficiently. In this talk, I will introduce Bose-Einstein condensates and explain their superfluid behavior. I will then present some examples of experiments where a quantum gas is restricted to evolve on the surface of an immaterial shell. I will discuss the fate of the gas as it rotates fast at the bottom of the shell, as well as tentatives to fill the shell with atoms to get a full bubble of superfluid.