Observation of many-body dynamical localization

• 成果类型: Article
• 署名作者: Guo, Yanliang; Dhar, Sudipta; Yang, Ang; Chen, Zekai; Yao, Hepeng; Horvath, Milena; Ying, Lei; Landini, Manuele; Naegerl, Hanns-Christoph
• 署名单位: University of Innsbruck; University of Innsbruck; Zhejiang University; Zhejiang University; University of Geneva
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-12134
• DOI: 10.1126/science.adn8625
• 发表日期: 2025-08-14
• 页码: 716-719
• 关键词: quantum chaos; gas; thermalization; realization

摘要

The quantum kicked rotor is a paradigmatic model system in quantum physics. As a driven quantum system, it features dynamical localization, specifically Anderson localization in momentum space. However, the interacting many-body kicked rotor is believed to break localization. Here, we present evidence for many-body dynamical localization for the Lieb-Liniger version of the many-body quantum kicked rotor. After some initial evolution, the momentum distribution of interacting quantum-degenerate bosonic atoms in one-dimensional geometry, kicked hundreds of times by means of a pulsed sinusoidal potential, stops spreading. Our results shed light on the boundary between the classical, chaotic world and the realm of quantum physics.