Event

Sep 27, 2018 4:00 pm - Nielsen Hall 170 - Colloquium
Peter Engels - Washington State University
From artificial gauge fields to negative-mass hydrodynamics: Studying quantum mechanics with ultracold atoms

Dilute-gas Bose Einstein condensates (BECs) have emerged as an extremely versatile tool for the investigation of quantum dynamics. BECs provide a unique access to the quantum world leading to new insights into a broad range of areas including atomic physics, quantum optics, condensed matter physics, and quantum computation, to name a few. In this talk, I will discuss our recent work focusing on the quantum analog simulation of condensed matter phenomena, including the engineering of artificial gauge fields to simulate charged particle dynamics using neutral atoms. I will present techniques that we have implemented for the generation of these gauge fields, and highlight key results obtained by applying these techniques to problems from nonlinear dynamics. Specifically, we have generated dispersion relations featuring a roton-like minimum and a region of negative effective mass, leading to peculiar quantum hydrodynamic behavior.