Wolf von Klitzing hot topic talk at the International Conference on Quantum Optics 2020.

Title: Ultra-smooth matter wave guides: Bose-Einstein Condensates at super-sonic speeds with(out) obstacles

Wolf von Klitzing

Abstract

In this presentation, I will talk about our recent experiments of coherent transport of matterwaves in ultra-smooth waveguides over macroscopic distances of up to 40cm. We use optimal control theory to accelerate the atom clouds with minimal heating. The BECs move at speeds of many times the critical velocity of superfluidity. I will discuss the role of roughness of the guides and the limits for coherent transport.