报告类别：基金委理论物理平台AMO系列活动

报告题目：Supersolid phases of Rydberg-Dressed cold atoms with spin-orbit coupling

报 告 人：张晓斐 中国科学院国家授时中心

报告时间：2021年6月11日 9:30-10:30

报告地点：致知楼3514会议室

报告摘要：

Superfluid with spontaneous translation symmetry breaking, usually known as supersolid, has been attracting intense attention in the field of ultracold atomic physics. In this paper, we predict abundant supersolid phases in Bose-Einstein condensates induced by the combination of Rashba spin-orbit coupling and Rydberg dressing. We reveal that a dimensionless number, which is defined as the product of the Rashba-ring radius in momentum space and the blockade radius in real space, plays a crucial role in determining the number of the condensation points and their arrangement, and thus the structure of supersolid. Surprisingly, we find that exotic topological entities, such as discrete vortices with a broken azimuthal invariance and high-order vortices characterized by a nonzero radial quantum number, can be stabilized in supersolid crystal cells by spin-orbit coupling, which are generally inaccessible in a conventional superfluid.

报告人简介：

张晓斐，中国科学院国家授时中心研究员、博士生导师，中国科学院大学天文与空间科学学院岗位教授，陕西省特聘教授、陕西省青年科技新星，中科院青年创新促进会会员、西安分会会长、数理分会秘书处。主要研究方向为超冷原子及其在精密测量物理中的应用研究。在国际知名学术期刊Physical Review Letters, Physical Review等发表80余篇。现为中国物理学会旗下《物理学报》、《Chinese Physics B》、《Chinese Physics Letters》、《物理》青年编委，《Scientific Reports》编委，国际天文学会、日本物理学会、中国物理学会、中国天文学会成员。