报告人：张晓斐 教授
报告题目：Characterizing Superfluid Fraction and Topological Property of Supersolids via Nonequilibrium Dynamics
报告时间：2026年1月17日（周六）下午14：30
报告地点：云龙校区智华楼205报告厅
主办单位：数学与统计学院、数学研究院、科学技术研究院
报告人简介：
张晓斐，现任陕西科技大学文理学院教授、博士生导师，西安交通大学兼职教授、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，数理分会副秘书长，长期从事冷原子和精密测量物理领域研究。2010年博士毕业于中国科学院物理研究所，曾在中国科学院理论物理研究所、日本东京大学、日本国立电气通信大学开展博士后研究工作。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，《Optik》编委，Cell (The innovation)组委会。在Physical Review Letters、Physical Review等发表100余篇，其中PhysRev.Lett./A/E 20余篇。
报告摘要：
Supersolids–exotic quantum states that combine superfluid flow with crystalline order–have recently been realized in quantum degenerate gases, yet a direct quantitative measurement of their superfluid fraction and understanding of their topological properties have remained elusive. We show that the nonequilibrium dynamics of a spin-orbit coupled dipolar Bose-Einstein condensate under PT-symmetric driving and dissipation generates an oscillating current whose frequency exhibits a strong dependence on the superfluid fraction of the underlying supersolid. This dynamical response further reveals topological phase transitions between distinct supersolid phases characterized by their spin textures. Our findings establish a platform for exploring supersolids with topological properties and provide deep insight into their nonequilibrium behavior beyond conventional closed-system scenarios.
