报告题目：Quantum magnetism in dipolar Rydberg atom arrays

报 告 人：Antoine Browaeys, Laboratoire Charles Fabry, Institut d’Optique, CNRS

报告时间：2025年9月16日（星期二）16：00

报告地点：物理楼W105

内容摘要：This talk will present two recent experiments where we explore quantum magnetism in a synthetic system consisting of Rydberg atoms arranged in arrays of various geometries.We explore the dynamics of hole in a spin background, implementing a bosonic version of the t-J model usually introduced to describe the properties of doped magnets. To do so, we use the resonant dipole interaction between Rydberg atoms in tweezer arrays and rely on three Rydberg states in each atom to encode the spin and the hole. Varying the ration t/J, we observe in a one dimensional chain the binding of holes and the influence of the dipolar tail of the interaction on the propagation of the holes [Qiao et al., Nature 2025]. Working in a triangular ladder geometry and in a regime where t J, we observe the binding of a magnon and hole and explore kinetic frustration in this system.

报告人简介：Antoine Browaeys is a senior staff Scientist at CNRS. He studied at the Ecole Normale Supérieure in Cachan (France) and did his ph’D under Alain Aspect at the Institut d’Optique (2000). He spent two years at NIST in the Laser Cooling group led by W.D. Phillips. He was hired as a scientist at CNRS in 2003. He is working on experiments manipulating individual cold atoms and small, dense atomic clouds. Part of his research led to the creation of the Pasqal company, that he is a co-founder and scientific adviser of. He was awarded the Aimé Cotton Prize of the French Physical Society in 2007 and the Silver medal of CNRS in 2021. He was elected member of the French academy of science in December 2023.