Browsing by Author "Yuan, Zhen-Sheng"

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    Observation of many-body scarring in a Bose-Hubbard quantum simulator
    Su, Guo-Xian; Sun, Hui; Hudomal, Ana; Desaules, Jean-Yves; Zhou, Zhao-Yu; Yang, Bing; Halimeh, Jad C.; Yuan, Zhen-Sheng; Papić, Zlatko; Pan, Jian-Wei
    The ongoing quest for understanding nonequilibrium dynamics of complex quantum systems underpins the foundation of statistical physics as well as the development of quantum technology. Quantum many-body scarring has recently opened a window into novel mechanisms for delaying the onset of thermalization by preparing the system in special initial states, such as the Z2 state in a Rydberg atom system. Here we realize many-body scarring in a Bose-Hubbard quantum simulator from previously unknown initial conditions such as the unit-filling state. We develop a quantum-interference protocol for measuring the entanglement entropy and demonstrate that scarring traps the many-body system in a low-entropy subspace. Our work makes the resource of scarring accessible to a broad class of ultracold-atom experiments, and it allows one to explore the relation of scarring to constrained dynamics in lattice gauge theories, Hilbert space fragmentation, and disorder-free localization.