学术报告（5月8日）

时间：5月8日早上9：00--10：00

主持人：钟凡 教授

欢迎广大师生踊跃参加！

摘要：

Synthetic abelian and non-abelian gauge fields for ultracold atoms have attracted a huge interest. Recent experiments on ultracold atomic gases have made remarkable breakthroughs in realizing synthetic magnetic fields and 1D spin-orbit coupling for neutral atoms. In this talk, I will show you two different schemes on generating gauge fields in spinor quantum gases. First, I will present a general scheme for dynamically creating a 2D Rashba-type spin-orbit coupling for neutral atoms with arbitrary hyperfine spin by using only magnetic-field-gradient pulses. Second, I will show you that a U(1) gauge field can spontaneously emerge in a mixture of spinor Bose-Fermi gases loaded into a frustrated triangular optical lattice. The underline mechanism is that Fermi surface nesting at 3/4 filling leads to spontaneous formation of various bosonic spin textures. Most significantly, in one non-coplanar state the mixture is found to exhibit a spontaneous quantum Hall effect in fermions and a finite-momentum condensation in bosons.

报告人简介：

许志芳教授是2004年中大物理系本科毕业生，2009年清华大学博士毕业，然后在清华、日本、美国从事博士后研究，2015年加盟华中科技大学beat365中国唯一官方网站。