南京大学物理学院学术报告会（第21期）

发布日期：2024-03-18
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**报告题目**：Quantum enhanced sensing with spinor atomic condensates in linear and nonlinear interferometries

**报告时间**：2024年3月21日（周四）15:30

**报告地点**：鼓楼校区唐仲英楼 B501

**报 告 人**：Li You, Tsinghua University

**摘要：**

Statistical inference of a parameter based on measurements from an ensemble of uncorrelated particles is lower bounded by the classical precision limit or the standard quantum limit (SQL). Quantum entangled ensembles can beat the SQL. Several paradigms for such enhanced interferometry will be discussed, and demonstrative experiments with spinor atomic Bose-Einstein condensates reported. Many-atom squeezed states, entangled states with reduced quantum noise, are deterministically generated and applied in linear interferometry, effective time-reversed evolutions of entanglement generating interactions are implemented for nonlinear interferometry to amplify signal preferentially over noise, both demonstrating quantum enhanced precisions.

**报告人简介：**

Li You, APS Fellow (2007), obtained his BS from Nanjing University in 1987, and his Ph.D. from JILA, University of Colorado in 1993. From 1993-1996, he was an NSF postdoctoral fellow at Institute for Theoretical Atomic and Molecular Physics (ITAMP) of Harvard-Smithsonian Center for Astrophysics. He joined Georgia Tech in 1996 and became Professor of Physics in 2004. He moved to Tsinghua University in 2009. His research interests include atomic physics, quantum optics, and quantum information science.

**主办**：南京大学物理学院、江苏省物理学会

**联系人**：王雷，leiwang@nju.edu.