Скачать или смотреть Prof. Dan Stamper Kurn

Prof. Dan Stamper-Kurn
UC Berkeley
Title of talk "Transport in ultracold atomic materials:
a study of flat bands and a window into full-counting statistics, A study of flat bands and a window into full-counting statistics"
Abstract:
Ultracold atomic gases allow us to study many-body systems, with strong analogies to condensed-matter physics, within new settings and with great flexibility and precision. I will discuss two experiments on quantum gases that relate to current transport in solid-state materials. In the first, we examine effects of geometric frustration on bulk transport and measure the group velocity of a quantum gas placed within the nominally flat band of a kagome lattice. We observe a dramatic renormalization of band structure caused by atomic interactions. In the second experiment, we use an optical cavity to conduct precise and real-time measurements of a gas as it undergoes the non-equilibrium process of evaporative cooling. We examine the two-time correlation in the atom number to identify regimes of sub- and super-linear evolution. This experiment touches on the subject of full counting statistics and its previous study in the realm of mesoscopic electronics.


Introduction by Host Valentin Walther, ITAMP Postdoctoral Fellow