A Fermi gas of molecules with tunable dipolar interactions | Jun Ye (JILA / Univ. Colorado) скачать в хорошем качестве

A Fermi gas of molecules with tunable dipolar interactions | Jun Ye (JILA / Univ. Colorado)

This Video was recorded on 23 Feburary 2021 as part of the MCQST Colloquium A Fermi gas of molecules with tunable dipolar interactions The advent of a degenerate Fermi gas of polar molecules sets the stage to explore novel many-body physics. We apply a precisely controlled electric field to tune the elastic dipolar interaction by orders of magnitude while suppressing reactive losses. Efficient dipolar evaporation leads to the onset of quantum degeneracy in two-dimensional optical traps. When the electric field is used to tune excited molecular rotational states into degeneracy with the scattering threshold, we observe sharp collision resonances that give rise to three orders-of-magnitude modulation of the chemical reaction rate. Using this resonant shielding, we realize a long lifetime for a bulk molecular gas with tunable interactions. === The MCQST Colloquium Series features interdisciplinary talks given by visiting international speakers. The monthly colloquium covers topics spanning all MCQST research units and is broadcasted live via Zoom for audiences worldwide. The main goal of the series is to create the framework for idea exchange, to strengthen links with QST leading groups worldwide, as well as to act as an integral part of the local educational environment. === Discover MCQST ▶ Colloquia: https://www.mcqst.de/news-and-events/... ▶ Website: https://www.mcqst.de​​​​​​​ ▶ Twitter:   / mcqst_cluster​   ▶ LinkedIn:   / mcqst​