Observation of many-body dynamical localization
- Yanliang Guo
- Sudipta Dhar
- Ang Yang
- Zekai Chen
- Hepeng Yao
- Milena Horvath
- Lei Ying
- Manuele Landini
- Hanns-Christoph Nägerl
2025-08-14
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.